they just announced the release date for March 26 at $399
http://bitwig.com/en/bitwig-studio
Really impressed with what I see so far. Seems everything Ableton needed to be. Takes some cues from VDMX sort of with an "inspector" and assigning LFO to any parameter
Here's an in depth look
https://www.youtube.com/watch?v=XqnNkTvEJSk