Ok, let throw some ideas around. We can be fairly certain there will be more than one device. This assumption is made due to the whole rx-51, rx-71 keyboard layout thing in the SDK. At the time (I just checked) there was a little speculation about the number jump between 51 and 71. How about, and please dont shoot me, this as a scenario: rx-51 is the phone we are seeing rx-71 is an n810 style tablet and there is another tablet the rx-61 which is n800 like i.e. no harware keyboard so it wasnt mentioned in the keylayout files.

If anything here is blatantly wrong I apologise, but I'm just trying to be optimistic...