I think a lot of people are missing the whole point here....The Desktop is dying...the mouse and keyboard combo of the last 30 years is dying. It's not going to happen overnight, but in 10 years time, I think it will be over.
Companies like INTEL and MS have whole teams employed as think tanks to analyze what future tech will be and it will be smaller, faster, more integrated components with user interfaces so different to what we could have imagined when we first got our hands on a mouse.
Integrating the CPU into a MOB is a perfectly sensible step - We have integrated sound and graphics now - Is the CPU such a big step?
Most people's PC's in the next 5 years won't be a traditional PC, it will simply be a Smart TV, where I can facebook, skype, watch iPlayer and a few other things....start adding a cloud OS to this (Like Chrome) and I no longer need a PC by any definition.
It can only be right for companies like Intel to have one eye on the future and start building a planning for that now.