Although the patch was released a few days ago, here is finally the list of changes.

If you have problems with any build, you can go into the "betas" section of the properties and select a previous build.

Change log:

• Bosses have gotten dialogue (and in one instance music) which fits much better with the story. This affects some levels also. (No specifics here as it could be spoilers.)
• Lava Boss had some graphics bugs with the gravity + laser effects.
• Data collection code has been removed.

Thanks!