I'm about to buy a DH57JG, but read that the first bios version only supports i5 600 series.. Then i looked at Bios updates, and found out that there's a new version - 0396 with updated CPU support, but the Release Info dosen't say what's updated.
My plan is to buy the H57JG + a i5 750, but will the MB support it yet, or should i go for the DFI P55 mini-ITX?
It seems that the motherboard is not designed to be compatible with the the i5-750 processor. You may check the list if Intel motherboards compatible with that processor on the following site:
Concerning the release notes of the latest BIOS available, keep in mind that this same release is shared with the DH57DD motherboard which does support the i5-750, so this updated processor support note, seems to refer to this last motherboard.