They've spotted a message on a developer list that hints at a beta release as soon as this December, assuming the extensions team gets their BrowserActions ready, the code clears the appointed timelines, and the stars align over the Pegasus constellation in the fifth quadrant. (Can you tell I don't know anything about what it takes to ship a new browser? Or, for that matter, about astrology?)
But I do know something about using browsers, and it'll be nice to finally have an official version of Chrome to run on the Mac. There have been a couple of unofficial attempts at getting the base software running, but especially since I plan to use more and more of Google Wave, being able to run it in the "official" Google browser will be nice.