Being the pioneer/masochist type (aka ‘early-adopter’..), I was intrigued by the new Intel Atom x5-Z8350-powered UP Board, and now have one on (pre)order..
Basic info, with too much graphics.. http://www.up-board.org/specifications/
Not much info on their forum, yet, but it does have UEFI, so (speculation!) should boot with good old GRUB.. One thing it does not have is an SDcard connector, so will have to use a USB stick instead..
More info, when it arrives..
Robert Gadsdon. April 18, 2016.