It appears that HP’s Chromebox is powered by Haswell Core i7 parts, but that sounds like overkill. It is possible that the top SKU features a Core i7, while cheaper models will end up with low-end chips, much like the $179 Asus Chromebox.
HP’s focus appears to be on office users and it should be available this spring. It has dual-display support, a flexible VESA mount, HDMI and DisplayPort along with four USB 3.0 ports. No word on storage or RAM for the time being.