They don't get rid of the packman. Just the preview packages. Basically any packages which doesn't get released soon(TM) will be removed by default and will only be available if you poke around in the manifest file. https://forum.unity.com/threads/visibility-changes-for-preview-packages-in-2020-1.910880/ And in this regard it is similar with the SRPs. If you want to use a newer version (for example for the Hybrid Renderer), then also poke around in the manifest file and juggle the version numbers by hand.