Transportal is continuously releasing updates for BOTH Patrons AND on itch.io.
When a major release come out for Patrons, the previous release becomes freely downloadable on itch.io.
To put it simply:
Currently, the newest (Patreon-only) release is 0.2.7. When the next major release comes out for Patrons, itch.io will get 0.2.7 for free. :)
Thanks for playing, and thanks for the positive words!