Ei, have you seen this: http://hackaday.com/2016/01/26/bye-bye-atmega328p-hello-328pb/ ??? Is there a chance to a UNO rev4??
Thanks for the heads up! Looks interesting and would be buying one (or two) if Arduino would incorporate them. Since Arduino is going the 32 bit route, I don't see this happening. Although, I do see some other low-level companies making some dev boards with this chip. If I don't see anything in a month or so, I may throw together a design.