Not really sure what you mean by you comparisons and talk about seeds, but Harmattan/Maemo6 has been rebranded to a confusing extent and referred to as being the first release of "MeeGo" when it is based almostly entirely on Maemo. Since it should be fairly well developed by now (just an extension of Fremantle/Maemo5) it's the most likely candidate for a product release this year. What I've referred to as "true" MeeGo on the other hand is the OS based almost entirely on Moblin with very little Maemo input, and which is nowhere near ready for release in 2010 let alone a product announcement.