There's a new 2 DVD box of Macbeth out now in Germany. It has both versions of the movie, the shorter movie theatre release version and the longer version (114 min. with musical intro and outro)
Also included here are some interesting extras :
-a audio recording of Macbeth from a Mercury Theatre production in 1940
-the 4 min of "Voodoo Macbeth" with intro (much better quality then my old copy)
-an essay "Shakespeare and Welles" by Jean-Pierre Berthome (not so great)
A funny way to find out which scenes/lines were cut by Welles, is to watch the german dub of the long version. While most parts are spoken in german, all scenes cut for the shorter version are english with german subs only, which gives you a very strange mix of laguages/voices.