diff --git a/CHANGELOG.md b/CHANGELOG.md
index e6abc44..9208e4a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,26 @@
 > This project uses [Break Versioning](https://github.com/ptaoussanis/encore/blob/master/BREAK-VERSIONING.md) as of **Aug 16, 2014**.
 
+## v2.12.0-SNAPSHOT / ...
+
+```clojure
+[com.taoensso/nippy "2.12.0-SNAPSHOT"]
+```
+
+> This is a **major release** that **may** involve some **breaking API changes** in rare cases for users of some low-level or obscure features that have been made private or removed. If your code compiles with this new version of Nippy, you should be fine.
+
+> As with all Nippy releases: this version can read data written by older versions but older versions may not be able to read data written by _this_ version.
+
+* **BREAKING**: dropped support for `*final-freeze-fallback*` (rarely used)
+* **BREAKING**: dropped support for `*default-freeze-compressor-selector*` (rarely used)
+* **BREAKING**: made several implementation details private, incl. most low-level `write-<x>` and `read-<x>` fns (rarely used)
+* **Performance**: several significant speed + space efficiency improvements, including more variable-sized types
+* **New built-in types** (these previously fell back to the reader): regex patterns, symbols
+* **New experimental caching feature** (please see `cache` docstring for details)
+* **New**: `fast-freeze`, `fast-thaw` utils (please see docstrings for details)
+* **Change**: `freeze` return val is no longer auto type hinted as `^bytes` (had a performance cost, rarely used)
+
+**PLEASE REPORT ANY PROBLEMS**, thank you!
+
 ## v2.11.1 / 2016 Feb 25
 
 > **Hotfix** for broken Clojure 1.5 support
diff --git a/benchmarks.png b/benchmarks.png
index 9cd7982..af74558 100644
Binary files a/benchmarks.png and b/benchmarks.png differ
diff --git a/project.clj b/project.clj
index 6952995..d2f427f 100644
--- a/project.clj
+++ b/project.clj
@@ -1,4 +1,4 @@
-(defproject com.taoensso/nippy "2.11.1"
+(defproject com.taoensso/nippy "2.12.0-SNAPSHOT"
   :author "Peter Taoussanis <https://www.taoensso.com>"
   :description "High-performance serialization library for Clojure"
   :url "https://github.com/ptaoussanis/nippy"
diff --git a/src/taoensso/nippy/benchmarks.clj b/src/taoensso/nippy/benchmarks.clj
index aaa70be..698b4ef 100644
--- a/src/taoensso/nippy/benchmarks.clj
+++ b/src/taoensso/nippy/benchmarks.clj
@@ -62,15 +62,15 @@
   ;; (bench {:reader? true :lzma2? true :fressian? true :laps 2})
   ;; (bench {:laps 2})
 
-  ;;; 2016 Apr 13, v2.12.0-SNAPSHOT, refactor + larger data + new hardware
-  {:reader    {:round 52105, :freeze 17678, :thaw 34427, :size 27831}}
-  {:lzma2     {:round 43436, :freeze 28518, :thaw 14918, :size 11272}}
-  {:fressian  {:round 6875,  :freeze 5035,  :thaw 1840,  :size 17105}}
-  {:encrypted {:round 4718,  :freeze 2872,  :thaw 1846,  :size 16420}}
-  {:default   {:round 4250,  :freeze 2547,  :thaw 1703,  :size 16400}}
-  {:fast1     {:round 3777,  :freeze 2118,  :thaw 1659,  :size 17070}}
-  {:fast2     {:round 3753,  :freeze 2119,  :thaw 1634,  :size 17066}}
-  ;; 12.26
+  ;;; 2016 Apr 14, v2.12.0-SNAPSHOT, refactor + larger data + new hardware
+  {:reader    {:round 52380, :freeze 17817, :thaw 34563, :size 27861}}
+  {:lzma2     {:round 43321, :freeze 28312, :thaw 15009, :size 11260}}
+  {:fressian  {:round 6911,  :freeze 5109,  :thaw 1802,  :size 17105}}
+  {:encrypted {:round 4726,  :freeze 2951,  :thaw 1775,  :size 16308}}
+  {:default   {:round 4299,  :freeze 2655,  :thaw 1644,  :size 16278}}
+  {:fast      {:round 3739,  :freeze 2159,  :thaw 1580,  :size 17069}}
+  ;; 12.184228890439638 :default
+  ;; 14.009093340465364 :fast
 
   ;;; 2015 Oct 6, v2.11.0-alpha4
   {:reader    {:round 73409, :freeze 21823, :thaw 51586, :size 27672}}