Exact dates for the next release have not historically been determined until near the end of the prior release. 1.21 is currently estimated to be April 15, if we follow the same pattern, 1.22 will be released in July. But that is an estimate, not a promise.
A post was merged into an existing topic: Reminder: v1beta1 versions going away in 1.22: CRD and AdmissionWebhookConfiguration