You can obtain this update by using the Check for Updates button on the main menu display.
Full details of this release can be found in the Version History PDF file you will find in your PF3\Help folder once the update is installed, or you can check it here if you wish beforehand. You should always make a point of reading this document after each release as it may contain some very important news.
If you are still using the demo version then you will have to download and reinstall the complete demo again as that has also been updated to include these changes.
This update is cumulative