New build is already uploaded, so please give it a try and share your thoughts.
The full changelog can be found here:
http://steamcommunity.com/app/265970/discussions/0/617329505864300105/
New gameplay trailer has been released:
https://www.youtube.com/watch?v=x5odSal57lw
19th March final release will be made with Unity 5.0, so expect stability and performance improvement.