An anonymous source told CNET that Windows 8 for ARM is heading to developers soon. In October of 2011 the ARM edition of Windows 8 reportedly scared the industry because it was unstable, but now everyone is impressed by how well it runs.
ARM is less costly: Maybe most significantly, one source said a high-profile device that was demonstrated with fanfare at CES running on Intel chips is expected to be priced hundreds of dollars less on ARM. That device--from a top-tier PC supplier--is cosmetically identical to the Intel device, the source, who saw the ARM-based device, said.
"The bigger implication is, with [Intel-based] ultrabooks you're popularizing the idea that you have this thinner design that turns on faster, that lasts longer [battery life]--but then you have Windows 8 on ARM that's built at a price point that's much lower. And does all of those things too. This is setting up the ultrabook to head right into the teeth of their [ARM] competitor," according to the source.