We do know it will have an aluminium front panel and feet and it will be reinforced with an internal steel skeleton, with a painted, powder-coated or anodized black finish. There will be a fan blowing from the PSU chamber up across the hard drives, and will duct out the back behind the motherboard tray. There are precut mounting holes for a triple 120mm radiator on top, along with the many fans. The SATA backplane is accessible from the front of case through a door for your hot swappable drives.
Their rough estimate of MSRP is $250-300 and you can expect to see a good dozen or more changes in the final retail model.