Samus is a much rumored device, potentially a new version of the Chromebook Pixel. While we don't know when this Chromebook codenamed Samus is launching, the Coreboot support confirms a few details of the hardware.
Samus uses an Intel Haswell processor, runs ChromeOS (obviously), is based on "Bolt", supports both memory types, and features a touchscreen.
The Samus board support was added to Coreboot with this Git commit. We'll post more Samus details as we have them.
Google Chromebooks remain among the very few devices on the market utilizing Coreboot rather than a proprietary UEFI/BIOS.