Microsoft may be hoping to more directly challenge Apple with a self-branded Windows 8 tablet, part suppliers asserted in a rumor on Tuesday. The company would collaborate directly with TI, possibly using its 1.8GHz OMAP4470 chip, and brand it much the way the company has the Xbox 360 or Zune. The company was said by Digitimes to be keeping a "low profile," in part to give it the opportunity to scrap the project without much attention.