I liked the book (and all issues before it)a lot. However, all of the delays, knowing that Kitty was missing/dead/gone before hand ruined this issue for me. The writing and art were top knotch; the dialoug between Kitty and Emma was great. However, the delays killed it for me.
Throw in some really wierd plot holes, like why everyone turned into a drooling "zombie" and where the heck Lockheed was made me even more frustrated. At first, when I saw the drool, I thought "Hell yeah, Cassandra Nova is back!" But, I guess it was some sort of "magic"
I'm looking foward to July's Astonishing X-Men with Warren Ellis at the helm. I really like the cast and I hope that it's not delayed all to hell like Whedon's run.