Whoa there, big boy! Windows Phone 7 isn’t even powering a real smartphone yet, and we already have a tablet concept based on the platform, created by designer Umang Dokey.

It’s a sexy-looking beast, with an 8” screen, two joysticks on the back and a built-in stand that turns it into a coffee table-style PC. The designer has also envisioned 3D video calls and a keyboard built into the stand, but let’s not get too excited about it all yet: It’s just a concept, very far from being an actual product.

Check out a video demonstration below.

Tablet Concept – running Windows Phone 7 Series from umang on Vimeo.

Tags: microsoft, Mobile 2.0, Tablet, windows phone 7, zune