Unless they don't release it, it will have to be something new. Buckling springs in the Mighty Mouse layout ALONE mandates a new design.
You know, I just realized... they DO have something in their partsbin that could work, although it would take some retooling to add Windows keys and the TrackPoint... and to make it a spacesaver.
The IBM Model M2.
Just as thin as a cheap rubber dome board (of course, many M2s
WERE cheap rubber dome boards, but there were some that were buckling spring,) lower weight for the 101 key version than even the 84-key Model M SpaceSaver (due to not having a steel backplate,) and they could chop off the numpad, add a TrackPoint, and call it a Mighty Mouse.
Not to mention, it'd be stupid cheap to build - their only cheaper to build keyboards are the crap membrane keyboards that they sell that I'm 99% sure nobody buys.
True, not the Mighty Mouse LAYOUT, but... I don't like the Mighty Mouse layout, so something like that is actually what I'm hoping this thing would be.