It's been a long day, but this weekend I have finalized and packaged the GambOS applications for on next GambOS build.
So, now I can work on creating a new gambOS repository with gambas 3.19.6+bpo and GambOS applications.

GambOS Dashboard has a renewed tour (a bit longer as new stuff is added to the GambOS panel) and most images are replaced with better quality images.
GambOS Learning has improved layout and guides are now separated from the Gambas Learning install
GambOS Software is a new kid on the block. It will start with elevated rights and allows for removing installed GambOS software and for installing GambOS software. The guide installer is not coded yet and there are no guides completed yet.

GambOS Software Center installed on build 20

(Click to enlarge)

I have also done a lot of preparation to the iso making configuration files, that should make for improvements and hopefully fix some issues. I expect to have a new build any day now (if all goes well).

Edit:
1. I did some typo corrections to above.
2. I wanted to add that, for now, GambOS Software Center will only be able to install GambOS software as it has a local file repository holding gambas3 and all GambOS applications. I there will ever be a GambOS online repository, GambOS Software Center will be recoded to use that as source for installing. This would mean you can install and run it on any .deb package supporting system.