I plan on getting a motherboard that can do 3-way SLI on my GTX 670 FTWs without the being bottlenecked at 2.0 4x/4x/4x speeds (I got an i7-2700k, which doesn't support PCIe 3.0). I found the ASUS Maximus IV Extreme-Z, which is able to do the above. However, this board is EATX with a form factor of 12in x 10.6in, while my current board, an ASUS M2N-SLI Deluxe, is ATX with a form factor of 12in x 9.6in.
This is my current case (I don't know what it is):
I want to make my new PC as future-proof as possible, so any other suggestions for motherboard, case, cpu, etc are welcome (I got the i7-2700k for $250, but I can still return if need be for an Ivy bridge cpu and motherboard, though I also do cpu-intensive stuff so overclocking is important also).