Symbian released the source code for the S^4 homescreen application on Friday and posted up a gallery of images that provides a quick glimpse of the UI for the next generation Symbian operating system. The screengrabs show the homescreen with a clock widget, application categories, search, wallpaper selector, and more. One image is above and the remaining six are after the jump. Take a look and let us know your first impressions of Symbian^4 in the comments.