Herd 3 ISOs for desktop and alternate installations are tagged with the 20070201.1 and 20070201.2 serials, and bug tracking is separated out by variant and installation method. So if you find an error, make sure to put it in the proper queue.
Complete instructions for downloading and for testing protocol are on the wiki.
(Odd, but the release page still only shows Herd 1 and 2. Hmm.)
It’s still early, so you might have better luck with a regular download than a torrent download — at least for the next few hours. Seed it if you’ve got it, people. 😉