Branch differences

I’m wondering if anyone can provide information regarding the different branches in GitHub and what the differences are? This will help me ask further questions/topics on upgrading processes as I am currently running an appliance on Hammer-9 and it has not been upgraded since last August.

Update #1: Also, if this was the wrong category, I apologize as I’m new here. :slight_smile:

Update #2: Here is the reference topic I’ve used in the past in order to upgrade to Hammer-9