UPDATE: Fourth time was the charm! Download finished quickly and update took under 10 minutes. What's in it so far? Commenter Sarah Healey, below, says support for the additional carriers coming on line this week, which we should have expected (thanks!), Craig Hockenberry on the Twitter says an iPod Touch/Xcode glitch was corrected for devs, and iLounge says "update all" is gone from the App Store. Oh, and, some 3G bugs might have been squashed...
