As far as I can see from the initial blog post about jQuery mobile, the touch interface library is going to depend on UI patterns of iOS. This is acceptable for iPhone and Android machines, but Blackberry and Symbian users wont be happy to see these UI elements on their mobile phones. The reason is obvious, their wide screens (which are usually 320*240) wont allow them to consume that amount of space for large elements shipping with jQuery Mobile.

What are you planning to do with diversity of platforms?