I got an OTA update this morning as well, but it seems it only upgraded the maps database from 21.5 to 21.7. See the photos.
@Handydave do you know what would be the latest version number for my infotainment as well?
For hardware versions where the Device Part Number has a suffix A, B or C (or has no suffix like mine) then the latest software version available is 1668. These hardware versions were installed on Mk8s built up until 23 Nov 20. Earlier software versions for these units are 1650, 1664 or 1668.
For hardware versions with suffix D, the software version number started at 1788 and the latest is 1803.
Updating the software version can only be done by a VW dealer. As it ties up a workshop bay for 4 to 5 hours, VW HQ will only authorise an update which is likely to fix a software problem that has been reported by the owner AND observed by the dealer.
As mentioned earlier, OTA updates do not install a new software version.
By the way, map updates do download OTA, but they download and install in the background, with no notification to the user nor need for any user action.