All Tiki sites (1.6, 1.7) are recommended to upgrade to this stable version.
Major fixes concern jgraphpad, forum layout, and an especially important security fix for multi tiki. People having multiple install on same domain should upgrade asap.
- SourceforgeNet Release Notes
- ReleaseProcess173 - Resolved bugs and misbehavior since 1.7.2
1.8 preparation will span over the next weeks.