Custom cars can specify RPMs for shifting up and engaging the clutch
Redline can now list more then 64 different tracks
Replays with missing plug-in cars will no longer crash the game
Various other enhancements and bug fixes
Can list more than 64 tracks
Will now optionally look for Plug-Ins in ~/Application Support/ Redline/ and save redlogs there as well (it will still make use of Plug-Ins located at the same directory as the Redline.app)
Switches over to incremental Sparkle for future updates
Please note that clients older than 1.0.3 cannot join Redline 1.0.5 multiplayer games due to newer functionality, so Redline 1.0.5 is a highly recommended update