As a Product Owner I want to have an overview in my Board (Sprint Board as well as Kanban Board) and my Backlog to display the issues grouped by its assigned Release/fixVersion. Thereby I would have a better overview and it would be easier for me to plan ahead. 

Currently this is only as a workaround possible by using quick filters and adding them manually with each release name, but it is more a filter than a grouping and needs to be added manually for future releases (if there is not only one upcoming planned, which would be possible to filter by using "earliestUnreleasedVersion()").