The FM transceiver can be switched to NFM in the 2m ham band -- good for phone and various data modes, but especially APRS. There's an SMB jack under one of the covers somewhere, so you can hook up an external antenna and maybe an amplifier.

(FWIW, ham transmitters, unlike transmitters for most (all?) other services, don't need to be certified with the FCC -- the only "proof" that this isn't it is the absence of support in the public datasheets. But maybe Nokia has commissioned a super-secret variant with extended range...)

Seriously, while I'm well aware of the practical issues preventing a future tablet from having interchangeable/optional radio modules, it would be incredibly awesome. Hams could have 2m, 1.25m, and/or 70cm cards, and non-hams could go for FRS/LPD433/PMR446 cards.