From the recent images, about a slot gap or roughly 2cm from my estimate. If you dont put any fans under the gpu then give yourself another 2cm.What's the clearance from the bottom of the case for a 2 slot GPU?
Specification
Case Dimensions (H x W x D): 275 x 178 x 410mm, 20L
Overall Dimensions: 300 x 175 x 410mm (including case feets)
CPU Heatsink support: Up to 158mm in height.
Was trawling reddit looking up info on the cases but can't find the post now. Do suppose an actual release seems unlikely somehow...Huh i thought it was going to be same as C4-SFX, limited production.. (btw the C4-SFX "v2" is going to be mATX compatible also.) If it's a Lian Li mass produced case - that's amazing. As that case will be for sale all the time.
I'm gonna try to get C4 v2 case, as it's bit smaller and still mATX. At least there where a talk about increasing it's height about 5mm to fit mATX. And release is planned Q1/Q2 2014.
Who knows when this case will see light of a day.. No updates. No nothing.