Before you start fishing for your credit card, we need to tell you that the tablet is not being sold by NVIDIA. It is actually a reference device that NVIDIA will sell to other manufacturers so that they can brand the unit with their own name. Still, NVIDIA will be in charge of sending out software updates regardless of what name is on the outside of the unit. The OS will be stock Android.
The tablets will start shipping this October and helps the chip maker create a market for the Tegra 4. NVIDIA's partners won't necessarily compete with each other in the same market and the tablet could be offered to consumers with different variations. NVIDIA says that the Tegra Note design will be used by manufacturers "like EVGA and PNY Technologies in North America; EVGA, Oysters, and ZOTAC in Europe; Colorful, GIGABYTE, Shenzhen Homecare Technology and ZOTAC in Asia-Pacific; and XOLO in India."