Hey,
You will have access to all current and future course downloads and updates via your itch library, including the new v4.2.1 edition.
Regarding GB Studio versions:
For those users who started the course a while ago and are still building games using GB Studio v4.1.3 and won't be migrating their project, I’ve left the older version of the course available to download in case users need re-download those lessons. GB Studio 4.1.3/LBaP! v1.1 used the Platformer+ plugin to manage the physics engine. Those systems have now been replaced with the built-in 4.2 platformer engine wherever appropriate.
The new v4.2.1 course materials are written specifically for GB Studio 4.2’s current platformer engine and features. That’s the version I recommend using moving forward. There’s no need to revert to an older version, as it’s now obsolete.
If you haven’t started the lessons yet, install the latest version of GB Studio (v4.2.1), download the updated course files (LBaP! v4.2.1 Edition), and you’re good to go 👍