That the Sprint Samsung Galaxy S II Epic 4G Touch is getting Ice Cream Sandwich shouldn't be a surprise -- we've already seen several leaked builds make their way out. But if case you need something more official in the way of an announcement, Sprint's just given it in its community forums.
Sprint will begin to roll out Google's latest version of Android™, Ice Cream Sandwich, to our customers in 2012. Ice Cream Sandwich will be available via an over-the-air update to a variety of devices including Galaxy™ S II, Epic™ 4G Touch and Nexus S™ and other key products in our line-up. Stay tuned for more details and exact timing.
The Nexus S 4G (never mind that Sprint calls it a mere "Nexus S" here), of course, is already getting its ICS update. So there's not a whole lot of meat here. But some word is better than none.