There's an existing question about the end of life policy but I think my question is subtly different and want to ask my question. I'm asking for the same reasons the other person did, my company needs a stated support policy to use the software.
Atlassian has an end of life policy here Atlassian Support End of Life Policy | Atlassian Support | Atlassian Documentation which states
Atlassian supports feature versions for two years after the first major iteration of that version was released (for example, we support Jira Core 7.2.x for 2 years after Jira 7.2.0 was released).
Sourcetree for Windows is currently at 3.4.9, according to the policy support would end 2 years after 3.4.0 was released which would be December 15, 2022. My questions are the following: