HDMI on B75:
http://www.gigabyte.com/products/product-page.aspx?pid=4405#... (2x HDMI + 1x DVI)
DP on B75:
http://www.gigabyte.com/products/product-page.aspx?pid=4203#... (HDMI + DP + DVI)
I stand corrected.
As for RAID, it looks to me that B75 isn't RST-enabled - a fact that Intel seem to have made a complete dog's dinner of documenting. Despite a few red herrings - among 'B75 Motherboards' on the Scan site, for example! - I've not managed to turn up an example of a RAID-capable B75 board.