Update CHANGES (#4886)

CHANGES

diff --git a/CHANGES b/CHANGES
index f5e91cb..ea856e0 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,5 +1,18 @@
 Revision history for SPIRV-Tools
 
+v2022.4-dev 2022-08-08
+  - General
+    - use exec_tools instead of tools for better RBE compatibility (#4837)
+    - Write binary files to stdout in binary on windows. (#4834)
+  - Validator
+    - Require ColMajor or RowMajor for matrices (#4878)
+    - spirv-val: Add SPV_KHR_ray_query (#4848)
+    - Implement SPV_NV_bindless_texture related changes (#4847)
+    - spirv-val: Add OpConvertUToAccelerationStructureKHR (#4838)
+    - spirv-val: Add support for SPV_AMD_shader_early_and_late_fragment_tests (#4812)
+  - Optimizer
+    - spirv-opt: SPV_NV_bindless_texture related changes (#4870)
+
 v2022.3-dev 2022-05-31
   - General
     - Add SPV_KHR_fragment_shader_barycentric support (#4805)