Atlassian will introduce a new capability that allows you to effortlessly copy Confluence spaces between sites within or across multiple organizations. This will enable you to duplicate your valuable content easily. Currently, Atlassian invites you to join their early access program (EAP) to ensure this feature perfectly caters to customers' needs. After its release, you will no longer need to submit support tickets for data transfers.
The EAP program is scheduled to run for about three months from its start date. Following the EAP, the product will transition to a Beta stage, incorporating improvements based on your insights.
To learn more about what product data will be copied (and what will not be), read this community post.