XBMC, one of the most widely adopted HTPC applications, has just been updated to 11.0. This version has been in development for over a year and boasts a number of new features as well as improvements over the previous version.
Among the new features and improvements are Addon Rollbacks, which allows users to revert to previous versions of installed extensions and skins; improved support for (unencrypted) Blu-ray content and structures, including direct ISO playback; DXVA deinterlacing support; and improved database scraping for TV, movie, and music information.
Perhaps most obviously to users will be the improved default Confluence interface. Where the previous version listed menu options vertically on the left of the interface, the new version lays the options out horizontally across the center of the screen. Based on screenshots, the new Conflux appears to be inspired by designs such as the popular Aeon skin, albeit with some further enhancements.
In addition, official “stable release” support has been extended to the Apple TV 2, iPad, and other iOS devices. Those devices require iOS 4.x and must be jailbroken for installation, but those devices gain a huge number of media formats otherwise unsupported by Apple.
Also new is XBMCbuntu, a replacement of sorts for XBMC Live. XBMCbuntu is a custom version of Ubuntu Linux that boots directly into XBMC, abstracting the actual operating system away from the user. The new package is able to easily update XBMC and its packages either through the command line (especially useful for updating across a network) or through the GUI package manager.
The full changelog can be found here.