AVENGERS #50 will be a double-sized showdown with Kang the Conqueror.
Here's how Marvel describes the issue:
"After the events of last issue, only a handful of Avengers are left to fight for a conquered and devastated Earth - but they're millions of miles away in space, coping with the triple-evil prophesied by Jonathan Tremont and the Triune Understanding! Is there no one left to halt Kang's unstoppable advance?"
The issue is written by Kurt Busiek, with art by Kieron Dwyer.