This is awesome, and a very welcome upgrade. I wish they’d added some on-board storage instead of the extra HDMI out (2GB of RAM and a little flash would have been the sweet spot for me), but 4GB RAM is way above what I expected for this iteration, and if I could spare the cash I’d buy a half-dozen and build myself a new cluster.
But this will be a killer solution for digital signage (time to dust off the stuff I wrote years back for Codebits and PixelsCamp, perhaps?).