If you are migrating to Tiki3 from Tiki versions earlier than Tiki3, you are encouraged to read first the pages describing the changes introduced in earlier versions of Tiki, such as:
These release contains a number of bug fixes and minor enhancements. There are no new major functions in this release.
The next Long Term Support (LTS) version will be Tiki 6, which is scheduled for release in October 2010. At that time the Tiki 3.x branch will no longer be actively developed.