What does version 7.2.1 do?

[stevedoering]

My new TiVo came with version 5.3 software. I've submitted a request for an upgrade to 7.2.1, but I can't find anything anywhere that tells me what the difference is between the old and the new? Can anybody help me?

[classicsat]

7.1 adds TiVoToGo, USB2.0, and G support.
7.2 adds to that, TiVo Goback, HME, and Canadian setup.
7.2.1 adds "clipping", at least to that.
Somewhere in there is direct network GS.