diff --git a/CHANGELOG.md b/CHANGELOG.md
index a6822b882..203a0b372 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,7 +6,12 @@ Format based on [Keep a Changelog](https://keepachangelog.com/).
 
 ## [Unreleased]
 
+### Fixed
+- Fog shader alpha tuned to D-059 spec: light fog 0.25-0.35 (was 0.25-0.55), deep fog 0.55-0.70 (was 0.78-0.90) — world content now visible through fog instead of hidden behind it (#563)
+
 ### Changed
+- Fog shader now distinguishes light fog (near cone, neutral dark) from deep fog (far from cone, zone temperature tint) with separate Perlin noise breathing cycles (8-10s / 15-20s)
+- Zone temperature tint populated per-tile from server zone_id: bar=warm amber-dark, hub=cool blue-dark, corridor=neutral dark (D-059/D-046/D-077)
 - Simplified vision cone from 3-sector (forward/peripheral/blind) to forward-only 120° arc — server sends only forward-cone tiles, client renders explored tiles behind the player with light fog overlay
 - Simplified fog shader from 5-layer to 3-layer model (clear, explored, unexplored)
 - Fog texture resize now preserves exploration data — tiles behind the player stay as light fog instead of reverting to unexplored black