At a quick glance, you might think that you're looking at the back of a 5530 here, but look closer -- the camera's a little different, and we don't know what's up with that grille or the slits underneath. Indeed, we could very well be looking at the back of a rumored 5900 XpressMusic, a phone allegedly set to bow at Nokia World in Stuttgart next month with a 5 megapixel camera, S60 5th Edition FP1 (first we've heard of an S60 5th Edition feature pack), and -- get this -- support for SDXC, which would give the phone truly insane expandability options. It's also apparently a bit thinner than the 5800 it'd be replacing, though the SDXC rumor is truly off the wall -- we'll need to wait right up until Nokia World until we believe that particular tidbit.
Update: Looks like the photo's been floating around for a while -- hard to say whether it's legit or not -- but these spec details are new. Of course, time'll tell whether they turn out to be legit -- everyone got their German vacations booked? Thanks, Symbian Freak!