Fear not. The re-implementation will be completely backwards compatible. It just a smoother compilation pipeline, and adds some output configurability. But regardless, Jeremy and I have decided it would be best to change the name.
That would be the fourth version of CoffeeScript. The 2nd version would be "CoffeeScript 2: Script Harder" which is much more awesome.
Since naming after desserts and alliterative animals has already been done, I wholeheartedly support action film naming conventions.