diff --git a/CHANGELOG.md b/CHANGELOG.md
index 124d54482..2e73f3c89 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ Format based on [Keep a Changelog](https://keepachangelog.com/).
 ## [Unreleased]
 
 ### Added
+- Sprint 20: Shape planned — 11 tickets (server 6, client 4, planning 1) covering template/triangle schemas, client refactors, and district layout design discussion
+- Planning team ticket type in sprint-plan skill — supports design discussions with purpose-assembled agent panels, Qatux and SI for bookkeeping
 - Server PR #68 merged — Sprint 19 save/load, tier eviction, test infra (7 tickets, 2714 lines)
 - Protocol version handshake — `HandshakeMessage` as first IPC frame before tick loop, forward-compatible input handling (#555, D-020)
 - Protocol v15 — `save_result` field on ObserverSnapshot for client save/load confirmation