Research in Motion has unveiled App World 2.0 beta, which introduces a number of new features that improve the user experience. There are now top 25 paid, free, and theme sections simplifying the user experience.

One of the problems with App World was that the only way you could buy apps was with a PayPal account. Following the 2.0 update, users will have the option to bill app purchases via their wireless carrier’s tariff (if supported by the carrier), or to directly charge a credit card.

“BlackBerry ID” is another new advancement included in the App World update. Something like an iTunes account, with your BlackBerry ID, you can easily download and purchase apps, then manage them in My World. If you ever need to switch to a new BlackBerry smartphone, logging in with your BlackBerry ID will bring all your apps to your new BlackBerry.

BlackBerry App World will also incorporate QR barcodes into app profiles. With these, users can simply click “Scan a Barcode” in App World, and point their BlackBerry camera at an optical pattern which loads up an application’s profile or triggers a download.

The new app store is only available by invite if you are registered on their Beta site. Click now on RIM’s beta site for the chance.