It's not clear if this is going to be in a service pack or if it will be a whole new version of the operating system.
But why wait? If you have Windows 8 and don't like/want/use the touch interface and just want to use the Desktop interface, get the Classic Shell Start Menu, that also includes a default setting to boot straight to the desktop (along with some other useful tweaks). It's free. If you like it, they accept donations.