There has been some updates and additions on xpageswiki.com in the last months:

27. Sep 2011: themeID values for core controls
27. Sep 2011: Switch theme on the fly
14. Sep 2011: Update to DbLookupArray and DbLookupColumn
30. Aug. 2011: Translate the extlib name picker dialog to another language
20. Aug 2011: Various new content for coding with JavaScript
13. Jul 2011: set a style to required and invalid fields
17. Jun 2011: application settings and xpage properties
16. Jun 2011: Controlling the browser cache

Enjoy!