This article by Global Post has more info as well as a few other videos. You can also check out this article by io9, or go straight to the source, the Suidobashi website which is, surprisingly, in English. You can buy your Kuratas online, once the project is completed, and can even customize its weapons, parts and colours.
Height : about 4,000 mm / Width: about 3,000 mm / Length : about 4,000 mm / Weight : about 4,500 kg
Control system : AE V-sido