By what I've heard from another thread "Qgil" said that it is may be possible that Maemo 6 might become available for N900 or N900 might be able to upgrade, he and his team is working hard on bringing the technology to people, but he cannot say more than that. Because it is classified information. But it is not yet official by Nokia. He adds that Nokia keeping some surprise for the N900 owners later end of this year. The surprise would be maemo6 upgrade. But don't take my word for it.