Android
ICS
http://www.att.com/gen/press-room?pid=22620&cdvn=new ... »
AT&T* today announced the availability of Android 4.0 (Ice Cream Sandwich) for HTC Vivid™ customers. After installing the software update, customers can now enjoy the optimized audio experience of Beats by Dr. Dre Audio™ and new and improved HTC Sense™ experience. Information about these features and more can be found at http://www.att.com/vividupdate. HTC Vivid™ will be the first U.S. smartphone to receive Ice Cream Sandwich as an update and the first to be issued by a wireless carrier. It will be followed by several other AT&T devices in the coming months:...
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Team EOS Stingray is the only stable ICS rom i've seen so far.
I have a Samsung Galaxy S II and current reports are that TMobile is going to push out ICS upgrade for this phone next week. For one I am guessing I may not have the choice whether or not to upgrade but as this is my first smartphone device all of this stuff is new to me.