Here's some notes on what changed in today's update. Only one level was added I'm afraid, the other level was not ready, so the level structure has not been adjusted yet.
Additions:
> A third level has been added to the Train yard. The act now transitions more smoothly to the Train itself.
Changes:
> Main Boss medium and hard difficulties are now slightly easier.
> Main Boss absurd difficulty is now harder.
> Main Boss now has a Checkpoint between phase 1 and phase 2.
> Reduce amount of Frenzy fuel that can be retained when a Level 1 Frenzy fades from 50% to 25%.
Fixes:
> Enemies no longer spawn out of bounds on Train Yard level 2.