It's a feature that I am looking forward to, but am I in a big rush to get to it? No. We have a pretty good high-availbility setup now, so this is not a feature I see as something I am waiting for with abated breath. Actually, I am more interested in going to 2012 for the "Contained Databases' feature than the "AlwaysOn" feature because remapping logins/users and permissions has always been a pain when moving databases around from server to server, or from Production to DEV, or to QA in the past. Also, I am looking forward to the "Restore Database with Timeline" feature as well. These two features are much more important to me right now than "AlwaysOn". :-D
"Technology is a weird thing. It brings you great gifts with one hand, and it stabs you in the back with the other. ...:-D"