Add 26.01 to roadmap

Author: badlop

content/roadmap/index.md

@@ -19,6 +19,12 @@ hide:
 
 This is a brief summary for each released version. For details, please consult ejabberd's [ChangeLog](../CHANGELOG.md).
 
+### 2026
+
+- [26.01](https://www.process-one.net/blog/ejabberd-26-01/)
+    - Database Serialization
+    - [mod_invites](../admin/configuration/modules.md/#mod_invites): Roster Invites and Invite-based Account Registration
+
 ### 2025
 
 - [25.10](https://www.process-one.net/blog/ejabberd-25-10/)