Most ITX come with 4 sata ports. If you utilize all the HDD mount in the V6 there will be no space for GPU.
We will announce SRP soon
C-Zone LYP has it. You can also back order from any of our authorized dealers. You can find a list in our product threads (any)

Please note that we will stop bringing in the V4. For MATX model, we will focus on the U3.