Is that a trick question ?

Anyway, just a FYI, what has been announced not to be supported on the N900 is Harmattan (previously known as Maemo 6), it just sounded silly because now everything is called MeeGo. Support of MeeGo (as the project hosted by the Linux Foundation) means little-to-nothing as that is not the flavour end-users would be using anyway, regardless of version (not on a Nokia device, not on a Samsung, LG or you name it). The most important projects, funded by Nokia proper, about which most users have minimum knowledge/clue, but should be the ones to ask about as THOSE will determine what they will actually have, is the "N900 MeeGo hardware adaptation project" and the "N900 community support for the MeeGo-Harmattan release from Nokia". Yes, horrible names, but those things are what you really want, not the generic 'MeeGo on N900'.