I contacted support because we don't have it yet either. It's being deployed by region.
"Thank you for contacting Canvas support. The 2023-03-29 deploy has not been completed for your region yet. You will not be able to see it listed in production until that deploy has completed. I haven't heard anything specific but I would imagine it should go through fairly soon as long as long as there haven't been any issues with the regions it already has been deployed to (again haven't heard of anything yet but that would usually be the only thing that would delay this). "