diff --git a/NEWS b/NEWS
index 49debe9a97..1d1591d84a 100644
--- a/NEWS
+++ b/NEWS
@@ -100,6 +100,11 @@ profile.rb, Profiler__::
 
 JIT::
 
+  * JIT-ed code is recompiled to less-optimized code when an optimization assumption is invalidated.
+
+  * Method inlining is performed when a method is considered as pure.
+    This optimization is still experimental and many methods are NOT considred as pure yet.
+
   * Default value of +--jit-max-cache+ is changed from 1,000 to 100
 
   * Default value of +--jit-min-calls+ is changed from 5 to 10,000