For Tiki support, please use the forums.
as well as the page linking to the resources related with Upgrades
If this is your first installation ever of Tiki, welcome to Tiki Community! You'll find details about the installation here:
Tiki 7.3 is includes security fixes for an issue first identified by Stefan Schurtz. All Tiki Administrators using Tiki 7 are highly encouraged to upgrade to this version.
This release does not include any additional enhancements.