No cost, your old licence covers you.
Major changes - yes. Mainly the licence model (applications are separate) and good chunks of the internals. As for plugins - you'll need to look at each of them to see if they're supported.
Have a good read though https://confluence.atlassian.com/migration/jira-7
Over the next several weeks we'll be sharing some of our Getting Started guides here in the community. Throughout this series of posts, we'd love to hear from customers and non-customers ab...
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