Check Atlassian’s official information on the End of support for Jira 6.4: FAQs about upgrading.
As a Gold Partner of Atlassian, Xeridia is delighted to offer its wealth of experience to help clients plan and execute projects to upgrade their JIRA platform to take advantage of the great new things offered by the new versions.
Please get in touch with us for further information and an informal discussion on how we can help.