Your licence entitles you to upgrade to the latest version released before the end-date on the licences. So if your licence is currently valid, you can upgrade now. There's no cost.
You need to be very clear about versions though because you can't have "JIRA software 6.1.7"
I suspect you have one of these two:
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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