pulled this quote from pinside:

"X-men is next by Borg and has been confirmed. YES CONFIRMED!
Avengers is rumored to be after that by Gomez.

They wanted to get pics released by now but the AC/DC delay is preventing that. They want AC/DC out in the hands of the buyers before they release pics of X-Men. Now I'm hearing that pics won't be released until the first week of May."