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diff --git a/docs/Changelog.md b/docs/Changelog.md
index e5169daf..3415150a 100644
--- a/docs/Changelog.md
+++ b/docs/Changelog.md
@@ -4,13 +4,31 @@
   release of the tool. See README.md for the general instruction manual.
 
 ### Version ++4.20a (dev)
+  ! A new forkserver communication model is now introduced. afl-fuzz is
+    backward compatible to old compiled targets if they are not built
+    for CMPLOG/Redqueen, but new compiled targets will not work with
+    old afl-fuzz versions!
+  ! Recompiled all targets that are instrumented for CMPLOG/Redqueen!
+  - AFL++ now supports up to 4 billion coverage edges, up from 6 million.
+  - New compile option: `make PERFORMANCE=1` - this will enable special
+    CPU dependent optimizations that make everything more performant - but
+    the binaries will likely won't work on different platforms. Also
+    enables a faster hasher if the CPU requirements are met.
+  - The persistent record feature (see config.h) was expanded to also
+    support replay, thanks to @quarta-qti !
   - afl-fuzz:
     - the new deterministic fuzzing feature is now activated by default,
       deactivate with -z. Parameters -d and -D are ignored.
+    - small improvements to CMPLOG/redqueen
+    - workround for a bug with MOpt -L when used with -M - in the future
+      we will either remove or rewrite MOpt.
   - afl-cc:
     - added collision free caller instrumentation to LTO mode. activate with
       `AFL_LLVM_LTO_CALLER=1`. You can set a max depth to go through single
       block functions with `AFL_LLVM_LTO_CALLER_DEPTH` (default 0)
+  - Minor edits to afl-persistent-config
+  - Prevent temporary files being left behind on aborted afl-whatsup
+  - More CPU benchmarks added to benchmark/
 
 
 ### Version ++4.10c (release)