Neither have I. What I did notice was that last night the Backup Assistant began around 3:30 AM, and it kept going. I figured it was getting ready for an upgrade? But it kept going, going in to cancel it did not work. Finally at 10:30 this morning I had to turn off/on the phone and shut off the Backup Assistant. When I synced it manually it only took seconds, then Market update let me know two apps had updates, which also acted up a bit (notification told me both successfully updates, but the Market showed they were still in progress). Alas, I have not yet seen hide nor hair of GB update.
I got the update pushed to my phone about a day or two after it started coming back out. Don't know if it's still rolling out or not or if I just got lucky but I got mine pretty early on. (and no, the "low memory" bug has not been fixed).
I got the update and trust me, you don't want it. All sorts of bugs and issues and so far Verizon doesn't have any sort of a timeframe for getting it fixed. Yesterday when I called and complained (again) I was told that an update to fix the update was listed as TBD. Who knows if the supervisor I spoke with even knew what she was talking about though. I'm so ticked - I might just use my hubby's upgrade and get myself the Vigor when that comes out.