From the German forum via Google translate:
http://translate.google.com/translat...ostcount%3D869
Also, the patch enables superuser so root explorer can be used to fake 2.2 at app install time and get some 2.2 apps to run:
http://translate.google.com/translat...ostcount%3D931
Adobe Reader and Aldiko 2.0 are known to run this way.
Just spreading gossip here.