The announcement was accompanied by a short video trailer, announcing Pryde's return in March's UNCANNY X-MEN #522. The announcement can be seen here.
All readers of recent X-Men know that Kitty Pryde has been absent since the events of GIANT-SIZE ASTONISHING X-MEN #1, the conclusion to the epic tale told by Joss Whedon and John Cassaday. She saved the earth at what looked like the cost of her life. In November, however, a back-up story in SWORD #1 featured an update of Kitty's situation. She's been flying through space, trapped in an impenetrable bullet with little hope of survival. She is, however, being monitored by SWORD as they look for a way to free her.
X-Men fans: What say you? Should this have come sooner? Is it too soon? Or is it about time? Have any speculations concerning the circumstances of Kitty's return? Make your opinions known in the comments and the forums!

Readers of CBR (Comic Book Resources) will have seen the announcement from Marvel concerning the return of long-absent X-Man Kitty Pryde.