I am not really sure what is missing at this point as there are several brands providing devices with keyboards. Blackberry/TCL, Planet Computers Gemini, Dragonbox Pyra, Pocketchip, Topjoy Falcon, GPD, and One Mix.

Plus there are several devices with keyboard addons, singleboard computer cases and there is also the potential KS Phabtop and Graalphone concepts.

With the exception of blackberry most of those devices can be made to run some sort of linux.

Small devices with keyboards and small sized tablets/umpcs/mids are a niche market and ones that can run full linux or full windows are a niche within a niche. The physical keyboard and the umpc almost vanished but they made a great comeback. The fact that are so many options is really quite astonishing. Honestly I would just go with the Top Joy, One Mix 2 or Gemini and stop being so picky.