We're on the home stretch now and wrapping up. Testing on Mojave is moving forward as we are now fixing display bugs and some minor issues with notebook cover images. Our final push is focused on updating our documentation.
To be clear, NoteTaker 4 is a planned compatibility release and not a feature release. However, the major functional change is all about working from iCloud and synchronizing your changes and edits to your notebooks from anywhere. Additionally, we no longer handle explicit notebook back-ups but rather, we leverage and use the built-in revision history to manage file integrity as intended by macOS for recovery and version browsing.
Now it's back to work so we can submit to Apple for review by end of this month.
All the best,