Just received this update on AT&T. Of course as with any software update I was too excited to remember to write down all the old info to see what they changed. Still 4.2.2 and Sense 5.0. Here's all the other info, if someone that hasn't received the update can compare:
SDK API level 5.41
Kernel 3.1.10-gf4d5f91
Baseband 2.21.5517.15_18.27.11.35L
Webkit 534.30
SDK API level 5.41
Kernel 3.1.10-gf4d5f91
Baseband 2.21.5517.15_18.27.11.35L
Webkit 534.30