John,
Yes it saves last layout on exit and will open with same layout.
It's not just UI, the way it was done, it enhances workflow dramatically and it has proper room for expansion.
With side panel you can create several views with different layouts and use them depending on situation.


It is unrealistic to expect that PG team would turn around 30+ year old software with a single release, but this was a giant step forward. I am certain that some minor issues will be found, but overall it is ready for prime time. Also, this is one of most stable releases. Hopefully PG team will maintain the course.