This is not just a great vacation beach shot with HDR-like details. It’s also a pic from Google’s new Nexus 10 tablet, shot by Google exec Vic Gundotra on vacation somewhere beautiful.

And posted, naturally, to his 3.3 million followers on Google+.

Which of course, did not happen accidentally. Google is giving us a preview of the company’s big Monday event at which we even more confidently can now predict the Nexus 10 tablet will be unveiled. The big deal with the Nexus 10 — besides that it’s coming to market — is that it is even higher resolution than the retina iPad 3 and iPad4, with 2,560 by 1,600 pixels on its large screen.

As Google+ helpfully informs us, the image is 2,048 by 1,536 pixels, making the 10’s camera at least 3.14 megapixels … coincidentally, also the value of pi (at least to two decimals).

However, since Google+ limits the maximum dimension on uploaded images to 2,048, it’s likely the actual  camera on Google’s new tablet is actually higher quality.

Commenters on Vic’s post are generally happy to see that the Nexus 10 is real, with one, Derek Ross, gently chiding the Google exec:

Vic, you’re such a tease :-)

VentureBeat will be at Google’s big event on the 29th, bringing you all the details of the Nexus 10 and the rumored LG Nexus 4 smartphone.

The event seems to be a fairly hasty Google attempt to respond to Apple’s big product announcements, including the iPad mini, and Microsoft’s Surface.

Another of Gundotra’s vacation photos with the Nexus 10: