I spotted that there had been some updated information posted to the ZX UNO project (mostly photo's). I hadn't seen this before, though I'd seen a few people in the past talking about building Speccy clones with FGPA technology... It would be nice to have some more info on the site about how to order or pre-order one. Right now it looks like its primarily a project that has yet to find a manufacturer. Nice...
http://zxuno.speccy.org/index_e.shtml
Interestingly someones made a ZX emulator with a "ZX UNO" emulation mode... I was surprised to see someone release an emulator for an unreleased machine.
http://sourceforge.net/projects/zesarux/