What qgil said has nothing to do with this. Product support is one thing and MeeGo as a standalone project is another. He specifically didn’t speak about upgrades, but API compatibility. IIUC It’s pretty much the same situation as Android, Google won’t ship you a 2.2 image for a HTC Hero - that would have been HTC’s job, but then again Motorola did that for the Droid. MeeGo as such won’t (and can’t) guarantee what the future plans of the vendor will be (unless upgradeability actually becomes part of the MeeGo compliance program, which is unlikely).

EDIT: And an important note about Apple. They are working by the rule of precedent - not to dismiss the track record, but those weren’t guaranteed upgrades, you assume 2 major upgrades because that was the practice during the last release, not because it has been announced previously (i.e. they announce on OS release what PREVIOUS devices will get it, not what FUTURE upgrades this device will get).