Apple dedicated much of its WWDC 2014 keynote yesterday to the introduction of new Continuity software that blurs the line between the mobile iOS and desktop OS X operating systems. Today Intel has announced a reference PC design that could do the same with hardware. Built around the upcoming Broadwell processor, this 12.5-inch tablet prototype is a mere 7.2mm thick and requires no fan to keep it running cool. Intels presenting the design with a keyboard accessory that converts it into a laptop, but theres nothing stopping Apple from using it to build the next generation of its MacBook Air in a thinner, lighter, and now completely silent form.