# What’s new for OMERO 5.6 for sysadmins

- Server installation instructions for RHEL 9/RockyLinux 9 and Ubuntu 22.04. See OMERO.server installation.

- Server configuration using self-signed certificates. We recommend to read OMERO.server upgrade.

- Version requirements has been updated to reflect changes in version support for 5.6.0 and tentative plans for 6.0.0. The biggest change is of course the removal of support for Python 2.

- Installation walkthroughs now all suggest use of a virtualenv for installing Python packages. The upgrade guides will help with the migration. See Migration to Python 3 for more information.

- See the previous What’s new page for more details.

For a full list of bug fixes and other improvements, see the CHANGELOGS.