These came out of nowhere it seems!
Seems to be same speed and core and the XTX 512Mb but I suspect with 256Mb DDR3 @ 1800Mhz, compared with 512Mb DDR4 @ 2000Mhz (althought Scan says DDR4, OCUK says DDR3...)
Now the interesting bit is the price...
£195 + free delivery from Scan ...pre-order
£188 + delivery from OCUK ...in stock (according to the site)
Cant seem to find any benchies at the moment though...links please if you see any.