You mixed something up. It's not hackery, it's a public, not even remotely illegal, well documented (and not that complicated) procedure of flashing a device. Nokia can't really charge for it, that would kill the whole point of having an open source OS. Without no clue just what the next generation's HW specification is, it's just too early to tell even if it's possible, much less if Nokia wants to do it. For the record, the N800 did get an OS upgrade (free) after the N810 was released, but N810 HW is close to N800. N900 HW is NOT close to N8x0.