While many of you are still waiting for T-Mobile's RC28 update to hit your G1, at least one reader has trumped us all. KoSoVaR is sitting on fresh, over-the-air software after receiving an update notice a few minutes ago. The process rebooted his G1 "a few times" only to stabilize at RC29. Hard to say what's new at this point but we'll get back to you if we hear about anything more than bug fixes.
P.S. For what it's worth, we're still kicking it old skool back at RC19 -- waiting... and waiting... for the automagic to begin.
Update: Another reader is up on RC29 now as well. Took 5 minutes start to finish and required a single reboot. Snap of the update screens after the break.
[Thanks, KoSoVaR and David]