diff --git a/CHANGELOG.md b/CHANGELOG.md
index 038f1ff..a530f5b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,9 +2,9 @@ This project uses [**Break Versioning**](https://www.taoensso.com/break-versioni
 
 ---
 
-# `v1.0.0-beta14` (2024-05-25)
+# `v1.0.0-beta15` (2024-08-07)
 
-> **Dep/s**: [Telemere](https://clojars.org/com.taoensso/telemere/versions/1.0.0-beta14) and [Telemere SLF4J provider](https://clojars.org/com.taoensso/slf4j-telemere/versions/1.0.0-beta14) are on Clojars.  
+> **Dep/s**: [Telemere](https://clojars.org/com.taoensso/telemere/versions/1.0.0-beta15) and [Telemere SLF4J provider](https://clojars.org/com.taoensso/slf4j-telemere/versions/1.0.0-beta15) are on Clojars.  
 > **Versioning**: Telemere uses [Break Versioning](https://www.taoensso.com/break-versioning).
 
 This is a **pre-release** intended for **early adopters** and those who'd like to give feedback. New betas will be released frequently, while I continue to fix issues and make other improvements/additions.
@@ -17,41 +17,70 @@ Please **report any unexpected problems** on [GitHub](https://github.com/taoenss
 
 ## Recent changes
 
-* **\[mod]** SLF4J and `tools.logging` signals now have a custom `:kind` and no `:id` (beta14)
-* \[mod] Renamed `get-min-level` -> [`get-min-levels`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#get-min-levels) (beta13)
-* \[mod] Renamed `shut-down-handlers!` -> [`stop-handlers!`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#stop-handlers!) (beta13)
-* \[mod] Changed default **handler back-pressure** mechanism from `:dropping` to `:blocking` (eaiser for most users to understand and detect; override when calling [`add-handler!`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#add-handler!)) (beta11)
-* \[mod] [`pr-signal-fn`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere.utils#pr-signal-fn) now takes only a **single opts map** (beta10)
-* \[mod] [User-level kvs](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#help:signal-options) are **no longer included by default** in handler output. `:incl-kvs?` option has been added to [`format-signal-fn`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere.utils#format-signal-fn) and [`pr-signal-fn`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere.utils#pr-signal-fn) (beta7)
-* \[mod] Middleware must now be a **single fn**, use [`comp-middleware`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#comp-middleware) to create one fn from many (beta7)
-* \[mod] [OpenTelemetry handler](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere.open-telemetry#handler:open-telemetry-logger) is **no longer auto added** (beta1)
+Latest (beta 15):
+
+* **\[mod]** Removed `*auto-stop-handlers?*` var
+* **\[mod]** Removed `:needs-stopping?` [handler dispatch opt](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#help:handler-dispatch-options)
+* **\[mod]** Cljs handlers MUST now include stop (0) arity
+- **\[mod]** Users MUST now **manually call** [`stop-handlers!`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#stop-handlers!)
+
+--
+
+Earlier:
+
+* \[mod] SLF4J and `tools.logging` signals now have a custom `:kind` and no `:id` (beta 14)
+* \[mod] Renamed `get-min-level` -> [`get-min-levels`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#get-min-levels) (beta 13)
+* \[mod] Renamed `shut-down-handlers!` -> [`stop-handlers!`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#stop-handlers!) (beta 13)
+* \[mod] Changed default **handler back-pressure** mechanism from `:dropping` to `:blocking` (eaiser for most users to understand and detect; override when calling [`add-handler!`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#add-handler!)) (beta 11)
+* \[mod] [`pr-signal-fn`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere.utils#pr-signal-fn) now takes only a **single opts map** (beta 10)
+* \[mod] [User-level kvs](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#help:signal-options) are **no longer included by default** in handler output. `:incl-kvs?` option has been added to [`format-signal-fn`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere.utils#format-signal-fn) and [`pr-signal-fn`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere.utils#pr-signal-fn) (beta 7)
+* \[mod] Middleware must now be a **single fn**, use [`comp-middleware`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#comp-middleware) to create one fn from many (beta 7)
+* \[mod] [OpenTelemetry handler](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere.open-telemetry#handler:open-telemetry-logger) is **no longer auto added** (beta 1)
 * \[mod] Various API improvements to [included handlers](https://github.com/taoensso/telemere/wiki/4-Handlers#included-handlers) and [utils](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere.utils)
 
 ## Recent additions
 
+Latest (beta 15):
+
 * **\[new]** Ongoing [API](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere) and [wiki](https://github.com/taoensso/telemere/wiki) doc improvements
-* **\[new]** SLF4J and `tools.logging` signals now have a namespace (from logger name) (beta14)
-* \[new] Added [`get-handlers-stats`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#get-handlers-stats) (beta13)
-* \[new] [`add-handler!`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#add-handler!) can now specify per-handler `:drain-msecs` (beta13)
-* \[new] Added [`*auto-stop-handlers?*`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#*auto-stop-handlers?*) (beta13)
-* \[new] [`remove-handler!`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#remove-handler!) now auto stops relevant handlers after removal (beta13)
-* \[new] [`with-handler`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#with-handler) and [`with-handler+`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#with-handler+) now auto stops relevant handlers after use (beta12)
-* \[new] (Advanced) Handler fns can now include `:dispatch-opts` metadata, useful for handler authors that want to set defaults for use by [`add-handler!`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#add-handler!) (beta8)
-* \[new] Added [Slack handler](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere.slack#handler:slack) (beta8)
-* \[new] Added [TCP](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere.sockets#handler:tcp-socket) and [UDP](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere.sockets#handler:udp-socket) socket handlers (beta7)
-* \[new] Clj [signal content](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#help:signal-content) now includes `:thread {:keys [group name id]}` key (beta7)
-* \[new] Added [postal (email) handler](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere.postal#handler:postal) (beta5)
-* \[new] Handlers now block to try drain their signal queues on shutdown (beta3)
-* \[new] Rate limiter performance improvements (via Encore) (beta3)
+* **\[new]** [#5] Added [comparison to Mulog](https://github.com/taoensso/telemere/wiki/6-FAQ#how-does-telemere-compare-to-mulog)
+
+--
+
+Earlier:
+
+* \[new] SLF4J and `tools.logging` signals now have a namespace (from logger name) (beta 14)
+* \[new] Added [`get-handlers-stats`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#get-handlers-stats) (beta 13)
+* \[new] [`add-handler!`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#add-handler!) can now specify per-handler `:drain-msecs` (beta 13)
+* \[new] Added [`*auto-stop-handlers?*`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#*auto-stop-handlers?*) (beta 13)
+* \[new] [`remove-handler!`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#remove-handler!) now auto stops relevant handlers after removal (beta 13)
+* \[new] [`with-handler`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#with-handler) and [`with-handler+`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#with-handler+) now auto stops relevant handlers after use (beta 12)
+* \[new] (Advanced) Handler fns can now include `:dispatch-opts` metadata, useful for handler authors that want to set defaults for use by [`add-handler!`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#add-handler!) (beta 8)
+* \[new] Added [Slack handler](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere.slack#handler:slack) (beta 8)
+* \[new] Added [TCP](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere.sockets#handler:tcp-socket) and [UDP](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere.sockets#handler:udp-socket) socket handlers (beta 7)
+* \[new] Clj [signal content](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere#help:signal-content) now includes `:thread {:keys [group name id]}` key (beta 7)
+* \[new] Added [postal (email) handler](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere.postal#handler:postal) (beta 5)
+* \[new] Handlers now block to try drain their signal queues on shutdown (beta 3)
+* \[new] Rate limiter performance improvements (via Encore) (beta 3)
 
 ## Recent fixes
 
-* \[fix] Don't drop signals while draining async buffer during shutdown, add tests (via Encore) (beta12, beta13)
-* \[fix] [`pr-signal-fn`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere.utils#pr-signal-fn) wasn't realizing delayed messages, add tests \[cf72017a] (beta11)
-* \[fix] [`pr-signal-fn`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere.utils#pr-signal-fn) broken custom pr-fn support, add tests \[e7cce0c1] (beta10)
-* \[fix] [#6] Missing root stack trace, add tests \[213c6470] (beta9)
-* \[fix] Broken AOT support, add tests \[ffea1a30] (beta1)
-* \[fix] SLF4J broken timestamps, add tests \[e222297a] (beta1)
+Latest (beta 15):
+
+* **\[fix]** [#10] OpenTelemetry handler: render keywords as plain strings \[6e94215e]
+* **\[fix]** [#11] OpenTelemetry handler: signals without message fail \[863cea15]
+* **\[fix]** [#14] File handler: Don't truncate gzip output \[2d4b0497]
+
+--
+
+Earlier:
+
+* \[fix] Don't drop signals while draining async buffer during shutdown, add tests (via Encore) (beta 12, beta 13)
+* \[fix] [`pr-signal-fn`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere.utils#pr-signal-fn) wasn't realizing delayed messages, add tests \[cf72017a] (beta 11)
+* \[fix] [`pr-signal-fn`](https://cljdoc.org/d/com.taoensso/telemere/CURRENT/api/taoensso.telemere.utils#pr-signal-fn) broken custom pr-fn support, add tests \[e7cce0c1] (beta 10)
+* \[fix] [#6] Missing root stack trace, add tests \[213c6470] (beta 9)
+* \[fix] Broken AOT support, add tests \[ffea1a30] (beta 1)
+* \[fix] SLF4J broken timestamps, add tests \[e222297a] (beta 1)
 
 ---
 
diff --git a/README.md b/README.md
index 472bab3..cb87c24 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ It helps enable Clojure/Script systems that are **observable**, **robust**, and
 
 ## Latest release/s
 
-- `2024-05-25` `v1.0.0-beta14`: [release info](../../releases/tag/v1.0.0-beta14) (for early adopters/feedback)
+- `2024-08-07` `v1.0.0-beta15`: [release info](../../releases/tag/v1.0.0-beta15) (for early adopters/feedback)
 
 [![Main tests][Main tests SVG]][Main tests URL]
 [![Graal tests][Graal tests SVG]][Graal tests URL]
diff --git a/project.clj b/project.clj
index bd3046e..00ad9ef 100644
--- a/project.clj
+++ b/project.clj
@@ -1,4 +1,4 @@
-(defproject com.taoensso/telemere "1.0.0-beta14"
+(defproject com.taoensso/telemere "1.0.0-beta15"
   :author "Peter Taoussanis <https://www.taoensso.com>"
   :description "Structured telemetry library for Clojure/Script"
   :url "https://www.taoensso.com/telemere"
@@ -45,7 +45,7 @@
     [[org.clojure/test.check             "1.1.1"]
      [org.clojure/tools.logging          "1.3.0"]
      [org.slf4j/slf4j-api               "2.0.14"]
-     [com.taoensso/slf4j-telemere "1.0.0-beta14"]
+     [com.taoensso/slf4j-telemere "1.0.0-beta15"]
      #_[org.slf4j/slf4j-simple          "2.0.14"]
      #_[org.slf4j/slf4j-nop             "2.0.14"]
 
diff --git a/slf4j/project.clj b/slf4j/project.clj
index b7ad96a..52056bd 100644
--- a/slf4j/project.clj
+++ b/slf4j/project.clj
@@ -1,4 +1,4 @@
-(defproject com.taoensso/slf4j-telemere "1.0.0-beta14"
+(defproject com.taoensso/slf4j-telemere "1.0.0-beta15"
   :author "Peter Taoussanis <https://www.taoensso.com>"
   :description "Telemere backend/provider for SLF4J API v2"
   :url "https://www.taoensso.com/telemere"
@@ -16,7 +16,7 @@
    {:dependencies
     [[org.clojure/clojure   "1.11.4"]
      [org.slf4j/slf4j-api   "2.0.14"]
-     [com.taoensso/telemere "1.0.0-beta14"]]}
+     [com.taoensso/telemere "1.0.0-beta15"]]}
 
    :dev
    {:plugins