So...was just looking online (because I'm dogged like that), and Marvel has the pub date for this specific issue as July 11, 2012. So I take that to mean it hasn't actually hit shelves yet? I think it's just that the SERIES started in 2011, which is why it's "Avengers Assemble (2011)".

It seems like a good thing to me that future/current comics have the two of them together... *hopes*