The free EPG in Australia will continue to be provided, and is not going away. Only a few countries will be losing the guide when Plex changes their metadata provider for the EPG in June 2019.
Losing coverage: Belize, Bulgaria, China, Croatia, Czech Republic, Estonia, Indonesia, Japan, Kuwait, Latvia, Lithuania, Netherlands, New Zealand, Qatar, Romania, Saudi Arabia, Slovakia, Slovenia, Ukraine, United Arab Emirates
You can read more about it here: https://support.plex.tv/articles/using-an-xmltv-guide/
