Thank you for the information!
Most cars will be updated offline, at your car service. OTA updates are not possible as potential issues were found that could potentially result in bricked cars.
I guess that excludes cars with ME 3.5 that get updates to 3.6&3.7 and cars with 3.6 that are getting 3.7 OTA already now, without notification or user action.
I wonder when the cars with 3.5 built before mid of August 2023 will get the updates too.