Nokia had another project program after the N900 called columbus. From my understanding it was the next generation for maemo, however they canned it suggesting that they wanted to focus on the N900; of course we now realise that was a load of **** and the deal to kill maemo and produce meego had already been done. If Nokia had any sisku they could pull out a rework of the N900 - ie. Fix the rough edges, put in 1G of ram, sort the swap organisation. But they won't as they have nuked the bridges with TI.