Motherboard upgrade - Clevo P750DM2(-g) board in a P750DM(-g) chassis?

I imagine there are a fair amount of us who are disappointed to have bought the P750DM (with or without g-sync). Rather than waiting for the next gen P750DM2 (with or without g-sync).

So, I'd like to know what the major physical differences are between the two models. If anyone can shed light on this, I will appreciate it greatly.

Thank you!

Motherboard upgrade - Clevo P750DM2(-g) board in a P750DM(-g) chassis?