First up, YUI 3.20 adds native support for touch events, so you can flick around your pages to your heart’s content. The jQTouch jQuery plugin has been providing similar functionality to jQuery developers, so it’s good to see YUI rising to the competition.
Another next-gen technology implemented in 3.2.0 is offline storage: YUI’s caching utility has been updated to allow for data to persist between browser sessions when this is supported.
Finally, there are a few new widgets. One of particular interest is the ScrollView widget, which simulates scroll lists on Apple iOS devices, with a little bit of bounce at the top and bottom of the list.
A lot of these features seem to have a common thread: HTML5 and mobile platforms. I’m sure that’s no accident, and it’s great to see more and better developer tools entering this space. As I said, there’s a lot more than just these features, so if you’re a YUI fan—or if you’ve yet to check it out—head on over and grab yourself a copy of the preview to play around with.