According to AppleInsider, there are hints of more music becoming available in iTunes Plus (DRM-free, 256kbps AAC files). http://forums.appleinsider.com/showthread.php?s=&threadid=93012 Looks like music from Warner, Sony-BMG, and Universal are all coming soon (maybe even tomorrow). Essentially, most if not all of the big 4 music labels music will be iTunes Plus. I was able to search for Neil Young in iTunes and have several iTunes Plus tracks from albums released through Warner Bros appear in the search results, yet when you bring up the album page none of them are iTunes Plus. When iTunes Plus first came out, we saw hints of iTunes Plus tracks in search results the day before they were officially announced.