Just going to post a little info from the about page here.

0.7.0 Vastly improved memory management, several memory leaks have been fixed (thanks Jim). Network names with special characters should resolve properly when saved from the volumes section. TV show metadata fixed (broke it in the last release uknowingly). First Leopard/frontrow compatible version as well, this about won't appear there due to problems with document controller, but this version should universally work between 2.x and Leopard frontrow (intel only), it may or may not work with the Tiger version of frontrow, untested. Now possible to add RSS feeds through the UI just like in the Weather and Network sections. Slideshow Editor will let you set the time per slide for the photo plugin to anywhere from 1 second to 9999 hours.

Leopard Installer
AppleTV take 2 installer
Wiki