We're about to start the vote on 2.1-beta1 and I've created the cassandra-2.1 branch. Please make sure to commit/merge to cassandra-2.1 before trunk starting now.
Note: for now, I haven't created a cassandra-2.1.0 branch but probably will in the future when we start having issues that we want in 2.1.1 but are not comfortable for 2.1.0, but I'll send another email when that happens. -- Sylvain