ComputerWorld posted a story that Metro apps for Windows 8 will be available only through Microsoft's own store

Dworkin also told developers that Microsoft will vet each submission and ensure that Metro apps are malware-free. "We will examine every application that will be submitted to us [and] we will run a virus check and a malware check on every application," Dworkin said.

Those scans also separate Microsoft's upcoming store from Google's Android Market, which this year has had to yank dozens of apps that contained attack code.

  Microsoft will follow Apple's model for Metro apps