ARAnyM is Atari ST/TT/Falcon+clones compatible and improved virtual machine (like a VirtualBox for a PC)
List of changes in this release is 60 pages long! No wonder as it's been four and half years since previous release, and the development never stopped, mainly thanks to Thorsten. See the 'ChangeLog' file for details.
Tons of things have been fixed in all areas of the ARAnyM, and lots of new features have been added. Following list is incomplete but still gives you a good overview: