Our support and compatibility commitment is: you can upgrade from any GA version *at the time of a new release*. So whatever is GA and supported now you should be able to upgrade directly to 6.0.
So that's 4.0, 4.1, and 5.0: downloads <https://cassandra.apache.org/_/download.html> On Tue, Apr 14, 2026, at 1:02 PM, Paul Chandler wrote: > Hi all, > > I am doing some testing of Cassandra 6, in particular the upgrade path at the > moment. > > I notice in the cassandra.yaml and the cassandra_latest.yaml the majority of > the text references CASSANDRA_4 still, with only one reference to CASSANDRA_X. > > I have tried it with CASSANDRA_5 and that works as expected, writing C*5 oa > sstables. I also tested it using CASSANDRA_4, and that seemed to work too, > writing C*4 sstables and then upgrading to C*6 when the > storage_compatibility_mode is set to UPGRADING. > > So my question: Is 4.0/4.1 -> 6.0 a recommended upgrade path these days? As > far as I know it has always been recommended to upgrade to the next major > version, not to skip one. > > If that is not the case and the upgrade path should only be 5.0 -> 6.0 then I > am happy to create a Jira and PR to fix the cassandra.yaml and > cassandra_latest.yaml > > Thanks > > Paul > > > > >
