http://www.belloflostsouls.net/2016/05/adeptus-titanicus-the-return-of-epic-latest.html
Word on the web is Epic will return... in 8mm.... 
I genuinely despair sometimes at the thought processes at GW
"what are the common micro scales"
"well, there's some 2mm, loads of 6mm, and some 10mm"
"Hmm, loads of choice there. I know, let's go for 8mm"
"8mm, why do you say that?"
"well, 2 + 6 = 8 and 10 - 2 = 8, so 8 will work with everything there"
"brilliant, that's why you're the boss. This is even better than your Finecast idea

"
So we get infantry that can't be used with anything, a few tanks that may work, but lots that won't - and bugger all that fits with their own previous ranges.
Still, on the bright side, they have just saved me a bunch of money, because I would have picked up some of the stuff had they reissued it in 6mm.