Hi @DBCK , the release notes are under your nose in the dashboard.
go to Org > Firmware Upgrades.
scroll down and you’ll see the release notes under the heading Latest Firmware Versions.
12.28.1 is the latest Stable release.
12.33 must be Beta for the switches you’re using
Darren OConnor | doconnor@resalire.co.uk
https://www.linkedin.com/in/darrenoconnor/
I'm not an employee of Cisco/Meraki. My posts are based on Meraki best practice and what has worked for me in the field.