Simpler interface. The advanced options are now hidden by default.
Better detection of directories, both where archives are stored and the best choice for a temporary directory
Bug fixes to improve stability and reliability, including some rare problems which would prevent Akeeba Kickstart from executing and / or make troubleshooting impossible.
Akeeba Kickstart requires PHP 5.3.04+, 5.4, 5.5 or 5.6. It won't run on hosts running PHP 5.3.03 (usually written as 5.3.3) or earlier, including PHP 5.2, 5.1, 5.0 and all 4.x versions.