Starting with version 1.4.0, we have started implementing major improvements to the JA T3 Framework V2 based on regular feedback from members and users. Version 1.4.0 saw update to support all major cache system (server side) supported by Joomla! 1.7 - the support has been implemented so far for Memcache, Xcache, cache lite and APC cache. Wincache and eAccelerator are not yet supported. Version 1.5.0 fixes bugs reported with the earlier version and also has few cache and optimization improvements including folder rearrangement in t3-assets folder. Check changelog for more details.
1.7 Templates running on T3 V2 would be updated to the latest Framework version over the time, anyone trying these latest improvement versions are requested to take due backups and report any issue arising out of upgrade. These updates will not be available in the T3 framework for Joomla! 1.5.