No, Maemo 5 and the N900 are step 4 of 5. No, they're step 5. Elephanta was skipped.Mistral (Maemo 2) Scirocco (Maemo 2.1) Gragale (Maemo 2.2) <shift to alphabetical code names> Bora (Maemo 3.x) Chinook (Maemo 4) Diablo (Maemo 4.1) Elephanta (skipped) Fremantle (Maemo 5) <"G"-name skipped due to Gragale> Harmattan (Maemo 6)