We've got good Grey's Anatomy casting news and bad Grey's Anatomy casting news.

The good: Katherine Heigl will grace us with our presence on the January 21 episode.

The bad: That filmed before Heigl's maternity leave. So she'll be gone again soon.

That's right, Heigl's previous five-episode hiatus was granted by the network so that she could film her new movie. Her next hiatus comes as she adopted a baby girl from Korea.

For one week at least, it looks like estranged newlyweds Izzie and Alex are finally going to have a heart-to-heart ... or have it out. Perhaps a heated combination of the two.

The episode description says: "Izzie returns, hoping to reconcile with Alex." Don't hold your breath. The episode title:"I Like You So Much Better When You're Naked." Hmm ...

Alex and Izzie reunite January 21 ... but for how long?

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.