Quick note to all people who are struggling with architecture decisions - be quick and pick your choice ASAP! Today two new frameworks became available to mobile domain and in the future architecture decisions will be even more complex!
Nokia will bring Microsoft's Silverlight cross-platform, cross-browser plugin to S60 and later to S40. Read the press release.
Google will bring Google Gears to mobile devices. Currently the only supported mobile platform is Windows Mobile but more platforms will follow.