It's not unusual to see top-level Googlers vacationing in some really cool places. It's also not unusual to see them taking pictures with unannounced devices.
So here's Google senior VP of engineering Vic Gundotra on a beach with a Samsung Nexus 10, as posted on Google+. It's shot at 2048x1536 -- or 3.1MP -- resolution (which seems low and likely is a G+ resize, especially given that these pics look pretty darn good), and the camera type clearly says "Nexus 10." (That can be manipulated, of course. But c'mon, would Uncle Vic really troll us?)
The Samsung Nexus 10 is one of two devices we expect to be announced Monday at Google's "The Playground is Open" event in New York City, the other being the LG Nexus 4. (Remember to keep it locked here Monday morning -- we'll be covering it live!)
Gundotra's actually posted a few pics from the Nexus 10 now. Check 'em out in his G+ feed.