XAP 12.1 and RHEL release

Hi, per the documentation ([https://docs.gigaspaces.com/release_notes/121vmware-guidelines.html](https://docs.gigaspaces.com/release_notes/121vmware-guidelines.html)), XAP 12.1 supports WMware 5+ and only RHEL 5.x/6.x versions RHEL 7.x isn't supported at all? Thanks