iPad App Store updated to include search filters, install buttons

Looks like Apple has made some changes to the App Store on iPad, including adding a slew of filters and will even let you know if any of the resulting apps are already bought/downloaded by giving you a new Install button.
New filters include Category, Release Date, Customer Rating, Price, and Device, as well as a Reset Filters option. Since App Store, like iTunes is really just an app-wrapped, internet powered, WebKit UI Apple can make all sorts of changes without having to wait for a new iOS version to ship. Usually these are just content features, banners, etc. (or the addition of Ping...) but it's nice to see new functionality sneak in every once and a while.
Also new, if you've already bought or downloaded an app but it's not currently loaded on your iPhone, you get an Install button instead of the usual Buy button.
Andrew also noticed that if you leave a search to go to Featured or Top Charts, etc. and then tap the search field at the top right, you're whisked right back the previous search results, sans keyboard.
So what do you think, welcome new features?
[Thanks Peter and Trevor!]
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Rene Ritchie is one of the most respected Apple analysts in the business, reaching a combined audience of over 40 million readers a month. His YouTube channel, Vector, has over 90 thousand subscribers and 14 million views and his podcasts, including Debug, have been downloaded over 20 million times. He also regularly co-hosts MacBreak Weekly for the TWiT network and co-hosted CES Live! and Talk Mobile. Based in Montreal, Rene is a former director of product marketing, web developer, and graphic designer. He's authored several books and appeared on numerous television and radio segments to discuss Apple and the technology industry. When not working, he likes to cook, grapple, and spend time with his friends and family.