planning: add TPAC 2026 dates/link

Author: dbaron

planning.txt

@@ -20,8 +20,10 @@ All meetings use IRC for live minuting and as a backchannel: the #css channel on
 ==== 2025 ====
 
   * 2025-08-19..21 [[planning:paris-2025|August FTF]] in Paris (Google)
-  * 2025-11-?? probably meeting for some days during TPAC 2025 (2025-11-10..2025-11-14), Kobe, Japan
+  * 2025-11-?? probably meeting for some days during [[https://www.w3.org/events/tpac/2025/tpac-2025/|TPAC 2025]] (2025-11-10..2025-11-14), Kobe, Japan
 
+==== 2026 ====
+  * 2026-10-?? probably meeting for some days during [[https://www.w3.org/events/tpac/2026/tpac-2026/|TPAC 2026]] (2026-10-26..2026-10-30), Dublin, Ireland
 ==== Misc ====
 
   * Standing offers: