Hi Tony,
There is a 0.9.8F version available from the downloads page
http://www.cambam.info/downloads/There were quite a lot of changes between E and F.
There will shortly be a 'G' update soon with some extra bug fixes - as soon as we finish running some more checks.
For the diagnostic messages, in Tool Options or the new System tab, Configuration section, you will find an option called DiagnosticLevel. Increasing this to 2 will display a few more messages like the time estimates. These estimates are also in the 0.9.7 release.
The time estimates aren't too accurate at the moment with a number of parameters hard coded in (which is why they are rather hidden away). However they can be useful when comparing relative results between operations with differing parameters.
In 0.9.8 there is the beginning of machine definition libraries. The plan is to link the properties of the machine definitions such as velocities and accelerations into the toolpath estimates to provide a hopefully more accurate result. This has been earmarked for 0.9.9.