A certain Seattle Grace doctor has everyone guessing. Is Izzie pregnant?

She's back, in any case, as the promo below (basically a shorter version of the original promo) for this week's episode of Grey's Anatomy makes clear. The question is, what now?

Check it out below and let us know what you think ...

[video url="http://www.tvfanatic.com/videos/new-new-history-promo/" title="New New History Promo"] [/video]

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