Didn't anyone read the news post about this new "maintenance update"?
We recently detected a problem within the Mac version that might crash the program when trying to change the resolution inside the simulator. The problem only occurs using newer MacBooks with Intel graphics, however we confirmed it to be a bug in the simulator. In order to fix the problem we released a small maintenance update. Since we do not bring out updates this often we included a new coaster style as a surprise, the Zamperla Twister Coaster. While the Windows version is not directly affected, we brought out updates for all platforms, just in case. Have fun! You can download the free update in the official downloads. The full release version 1.6 or newer is required. The German retail version is currently not supported. [ol]
Originally, it wasn't even supposed to be pushed out to everyone - just mac users. Get over yourself and just deal with the fact that we got a minor update.