A Raspberry Pi is more than cable of running digital signage. The Videocore IV GPU in the Raspberry Pi is at least as capable as that in the Intel, and the Raspberry Pi is already being targeted at the digital signage segment as the hardware is cheap, cool running, and more than up to the job. Also, there are now several operating systems already available (or under development, including bare metal).
This bare-bones device from Intel is expected to cost between $300-$320, so about the price of 10x Raspberry Pi ($35 each). Then you need to add memory (at $40-$80, another 2-3x Raspberry Pi), plus mSATA storage (say another $150, or 4x more Raspberry Pi).
Where are we up to? Lets call it the cost of 20 Raspberry Pi for one Intel PC, not to mention electricity running costs that will dwarf those of the Raspberry Pi. Just so it can do the same job as a Raspberry Pi.
This Intel product is a joke, a total, absolute joke.
Sure, in terms of pure compute it is a more capable product than the Raspberry Pi, but for the suggested market - digital signage - it's complete overkill and bested all ends up by the Raspberry Pi.
This "Next Unit of Computing" smacks of desperation from Intel before the onslaught of ultra cheap, ultra small, ARM powered computers. The real "Next Units of Computing". :)