Foxconn told Hexus that they've cancelled their Dreadnought motherboard because of quality issues with NVIDIA nForce 790i chipset:
Carl Brunning, the UK technical manager at Foxconn, told HEXUS: “The [790i] chip is not of the quality standard that we needed for the Quantum Force range.”
Quantum Force is Foxconn’s relatively recent entry into the enthusiast motherboard space. It has already released the Mars and Black Ops, with the 780a Destroyer expected soon, having been delayed by a BIOS rewrite, according to Brunning.
The P45 Avenger is apparently still a work in progress, with BIOS debugging being the delaying factor here too, but the 790i Dreadnought has left the building.