See a list of what has changed in each product update.
PM8: All versions
Each time a PM8 update is released, the documentation is updated to include a summary of the changes.
You can see the list changes:
It is the last topic in the program help file and is called Summary of changes in updates.
See the topic Product documentation in PDF format for download directions.
Within PM8, if you have Check for program updates turned on in the user preferences then when a new update is available there will be an on-screen message and also a button to download and view a list of changes.