Just wanted to confirm that yes it is a CSTM80 with White Devil top case, which is currently in the sampling (that is a real photo, not a render) and approval phase. It unfortunately couldn't launch at the same time as the set, but it is coming soon!
Yep, won't be any compatibility issues (like a weird-sized spacebar, etc). Only thing to note is the column of "G" keys on the far left of the K100—you'll need to use some of the extra keys to fill those out. Up to the individual as to whether that's suitable or you'd prefer specific legends on them.