Really mature. That's totally not the point - the phone costs more than a decent computer AND a netbook, it SHOULD be supported and upgraded as other phones and computers have been and will be. Nokia have a track record of NOT even doing a proper job of one complete and mature iteration of the OS a device is first shipped with... I'd even settle for just that frankly. To clarify, I love the N900 and just hope Nokia will let it be all that I HAVE PAID FOR AND SHOULD REASONABLY BE EXPECTING IT TO BE. The price tag warants years of support and upgrades!