Update CHANGELOG for v3.14.0

Bug: 510033563
Change-Id: I40671298301f31322fb8402216f36217f18493d3

CHANGELOG

diff --git a/CHANGELOG b/CHANGELOG
index 9519ce8..1e4bada 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,4 +1,4 @@
-2026-05-05 v3.14.0
+2026-05-12 v3.14.0
   This release is ABI compatible with the last release.
 
   This release includes significant compression efficiency and
@@ -31,6 +31,7 @@
     * New value 2 for use_fixed_qp_offsets: disallow the application of
       per-frame QP offsets, enabling full control of each frame's QP, by
       adjusting rc_cfg.cq_level between each encoded frame.
+    * Low-complexity mode support is extended to VOD encoding.
     * New AOM_EFLAG_FREEZE_INTERNAL_STATE flag for aom_codec_encode() to
       encode a frame without updating encoder state such as reference
       buffers, CDF tables, and rate control state. Useful for
@@ -69,17 +70,26 @@
     * Some minor quantization matrix formula and delta chroma q tweaks
       for the AOM_TUNE_SSIMULACRA2 tuning mode, with up to 0.2%
       SSIMULACRA 2 score efficiency gains.
+    * Re-tune and re-work encoder features, achieving coding gains at
+      each speed level and better coding efficiency vs complexity
+      tradeoff.
+    * RTC screen: improvements to quality and scroll detection for high
+      resolutions (>= 2K).
 
   - Perceptual Quality Improvements
     * AOM_TUNE_IQ improves the visual quality of layered image encoding
       compared to AOM_TUNE_SSIM.
     * Adaptive sharpness: tweak loop filter sharpness threshold to
       improve visual quality at QPs 29 and 30.
+    * Improve encoder algorithms in loop restoration, CDEF, temporal
+      filter and rate control, delivering better visual quality.
 
   - Speedups
     * Make Adaptive CDEF more decoder friendly by limiting CDEF
       application to only regions where high filter strengths are
       needed.
+    * Encoder complexity is reduced significantly, especially at speed
+      1 to 3.
     * Further AArch64 SIMD optimization of filtering algorithms,
       particularly using Armv8.6 Neon I8MM.
     * Additional tweaks to AArch64 Neon paths for quantization, SAD,
@@ -90,6 +100,14 @@
       filtering is used by the encoder.
     * Commit 74aaa1ef: fix AOM_SCALING_MODE crashes when compound mask
       prediction modes are used by the encoder.
+    * b:502030569: Avoid assertion failure in `read_uncompressed_header`
+      triggered by fuzzed input
+    * b:503197490: Fix an integer overflow in target bits calculation
+    * b:503691210: Avoid reference to uninitialized member variables for
+      multi workers.
+    * b:504317456: Handle buffer pointer in LAP mode to avoid overflow
+    * b:502133197: Avoid a bitread assertion failure in
+      get_av1config_from_obu()
 
 2026-04-02 v3.13.3
   This release includes several bug fixes. This release is ABI