Although Microsoft is just getting started with its 2012 Surface tablets (as shown above), the company plans to launch three new devices in the next year, according to a well-known source of leaks.

The so-called “MS Nerd” posted details about these supposed Surface tablets on a protected Twitter feed. Neowin spotted the tweets and posted the Windows tablets’ details.

According to this source, Microsoft will release another ARM-based Surface tablet running Windows RT. But instead of the Tegra 3 chip in the existing Surface, it’ll have a Qualcomm processor, and instead of a 10.6-inch touch screen, it’ll have an 8.6-inch display.

The second-gen Surface with Windows 8 Pro, meanwhile, will reportedly go the opposite direction, with its screen size expanding to 11.6 inches. And instead of using Intel’s Core processors, MS Nerd claims it’ll use an AMD Temash APU, which might not be as powerful, but would hopefully get better battery life than the estimated four- to five-hours in the upcoming Surface.

Finally, MS Nerd says Microsoft is planning a third device, called the Surface Book, with a 14.6-inch display and an Intel Haswell chip. Haswell is the successor to Intel’s Ivy Bridge processors, which Microsoft uses in the Surface with Windows 8 Pro.

Read more: PC World