Ensure external testers environment is ready for the parallel development

Whenever new branches are created, like right now 310 one external testers may need to:

• Perform some actions in their testing environment.
• Clearly comment about the existence of the new branches.

And we may need to:

• Roll a new version of the testing environment containing current branches/versions...

This issue is just to ensure that we don't miss that whenever a new "parallel development" period begins.