Looks like Apple rolled out a new neat little feature in the iPad App Store: search filters. When you browse the App Store from your iPad (mine is running iOS 4.3 beta, but I guess the change is live for everyone) and start searching for an app, five filters will appear under the top bar: category, release date, rating, price and device. Filters can be adjusted from a popover, and there's also a button to clear all filters.
The feature is quite useful if you're into searching for apps through your device's App Store, so go check it out. More screenshots below. [Thanks, Shane!]