its a little hidden, because they don’t make new posts but rather edit the patch notes into the opening posts, but they can be found here:
http://www.train-fever.com/forums/topic/release-notes/
“Build 4334 (September 18)
- Added a button to delete savegames
- Added mouse wheel sensitivity setting
- Added camera key bindings: tilt with <r> and <f>, zoom with <y/z> and <x>
- Added emulation for middle and right mouse button: <ctrl> + left => middle, <alt> + left => right
- Improved compatibility with Mac OS X 10.7
- Improved screen resolution switching
- Fixed a crash while building level crossings
- Fixed a texture loading crash
- Fixed a crash caused by excess files sitting in folders (“.DS_Store” etc.)
- Fixed visibility problem of resolution list in main menu (wasn’t visible on small screens)
- Fixed sound of modern open wagons”