Well, apparently Kevin got a little over-excited about being behind the camera, because he tweeted a behind-the-scenes pic of none other than Arizona! The tweet has since been deleted, but not before a dedicated fan over at the Callie_Arizona Livejournal community recorded it for posterity.
According to the Callie_Arizona post, a fan asked Kevin "How is the editing going for your episode? Is it completed as yet?" Kevin replied, "All good! Here is my view," and added this photo.
Based on this photo, it looks like Arizona is not only alive, but also well enough to sit up. Plus, she's wearing a regular sweater, so she's probably not confined to a hospital bed.
In less good news, Arizona looks really sad in this pic. Plus, she's not in scrubs, so she's not back to work (at least not in this scene). Still, we'll take sad Arizona over dead Arizona any day.
Ironically, Shonda Rhimes recently told, TVLine that she didn't want to spill anything about Arizona's story because she wants the audience to be surprised by the "really interesting journey" Arizona goes on (which apparently features "incredible" acting. No surprise there!).
Of course, the very fact that Shonda says Arizona goes through a "journey" seems to be confirmation that she lives (otherwise, that's a very short journey!). We're sticking with the theory that she loses her leg (or, at the very least, has to go through a very long recovery process). Our guess is that she's sad because she's getting bad news about her injury.