Silly question, the site notes the OS works on a low-memory platform, but the only download seems to be x64... Any plans for other release platforms rPI, oPI, etc?
It's absolutely possible but just a matter of available time/resources to support additional architectures. Prior to the latest release it was x86 only. The components of the desktop environment are fully portable since a lot of it is interpreted rather than compiled and the Mezzo desktop does run well on the rPI.