Have I been caught napping??? v4.0.1 has been released.
Looks like a minor bug fix release more than anything else:
Version 4.0.1
Improvements for the Variable Settings Wizard to support a wider variety of machines and setups
Extended compatibility for Windows rendering environments with reduced graphics support
Process ordering improvements for sequential printing control
Improved reliability for transitions between multiple processes
Better handling for prints with zero perimeter outlines
Improved naming prompts when using the “Save As New” option to create a new profile
USB communication settings are now maintained after a printer is connected, making it easier to setup builds for new machines
Updated support for the latest MakerBot and Dremel firmwares
Solved several rare situations that would cause slicing to take longer than intended
Resolved an issue with prime pillar and ooze shield toolhead sequences
Resolved an issue with large file handling on some Windows systems that had affected toolpath and factory file operations
Other miscellaneous stability and performance improvements