Upgrade eligibility jumping from November 21st to June 21st, eh? You know what happens in June?

We’ve since confirmed that this isn’t an isolated incident, but it’s definitely not showing up for everyone. AT&T could be rolling this out across their database slowly. Another possibility: they may not have intended for anyone to see this yet, and just borked the query for a handful of people. AT&T offered up early upgrade paths for long-time iPhone owners with both the 3G and the 3GS. MobileCrunch

The change also showed on my account, here’s a screen shot:

Here is one option for Why will AT&T will do something like that?

The apocalypse is nigh because AT&T has opened their network up to VoIP applications running over 3G on the iPhone. In other words, AT&T is now totally cool with Skype running over 3G.AT&T supposedly just told Apple and the FCC this afternoon that their network is ready for VoIP over 3G for the iPhone, meaning it might take a bit to show up in apps, but the floodgates are open now.

iPhone Carrier Update For MMS is now pushed, open iTunes and check for updates.

Just Make sure to restart your iPhone to make it work. The ATT Carrier Version is 5.5

FINALLY.