We branched the release/2.30 branch on github today and the first release candidate of the 2.30 series (2.30~rc1) is available in the beta channel of the core snap now.
The details and the timeline can be found in the snapd roadmap topic. We also started to tag forum topic that we targeted for 2.30
As always, please do let us know if you have specific issues or questions.
(EDIT): The 2.30 release is now released in the stable core snap.