I believe they're releasing this, as a fun way to test the water with HTML5, Javascript, etc. I believe they're pissed off with iOS development, as it's signif

I believe they're releasing this, as a fun way to test the water with HTML5, Javascript, etc. I believe they're pissed off with iOS development, as it's significantly more hassle than their usual routine of web development. I think they're lining up HTML5 as their solution to mobile. So we'll see Basecamp,Backpack,Highrise, etc move to HTML5, this way they'll have iPhone,iPad,Android supported. I believe this based on the snippets of JS they've generously released, and I believe there is more to come. I think this is far more likely than it being a publicity stunt.