Feel free to use EOL policy and release notes for answer for your question.
You can see 7.4 and 7.5. has the similar EOL.
Don't forget about migration hub before upgrade to 7.x release from 6.x release and upgrade notes.
For example, I am trying to use the latest version for my instance, like 7.6.1.
Hope it helps.
I’m a designer on the Jira team. For a long time, I’ve fielded questions from other designers about how they should be using Jira Software with their design team. I’ve also heard feedback from other ...
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