Thanks for the further information

It's great to have some forum members that can provide first-hand information.
And I completely agree about their motivation. It's a play that I'd been expecting Intel to make for quite some time - I wonder if we have the new CEO to thank for the change in direction. Perhaps Paul was too fixated on maintaining the status quo on margins whereas BK with his background on the manufacturing side recognizes that the only way for Intel to leverage its fabs and process technology lead are to actually use them.
For comparison to that $10 figure. A quick search yields that the single-core A8 based Allwinner A10 is something around $7 apparently, and then the isuppli Galaxy S4 BoM lists Qualcomm's Snapdragon 600 at $20... Yeah, if I were any of the ARM smartphone/tablet SoC players I'd be quite worried about an Intel that's fine with taking a hit on margins in order to steamroll its way into that market.