I just wanted to point out that there is no Nokia closed source limiting anybody from developing alternative UIs, as you seemed to suggest in your initial post. Also, you can trust ragnar when he suggests that pushing two UI paradigms is a hard (and expensive) exercise. He knows what he is talking about. Besides, it's just common sense: you read the news, you see the new products coming, you see the fast evolving UIs in these young form factors. Doing the right thing with one single UI paradigm is complex enough - do you know anybody (successful in business) pushing two?