I'm 3407XX, and was told my birthdate is 4/22. I also felt that the VIN was a bit older than I hoped, but given that deliveries have been lumpy (didn't they even pause for some software updates in May too??), I'm hoping it's a non-issue.
I read somewhere that swivel screens began on my birthdate (4/22), but SA could neither confirm nor deny for my particular car. I'll take the car either way because I feel that Tesla will eventually honor what was promised... or at least Tesla or 3rd party will be able to upgrade it at some point.
If we were anywhere near getting matrix headlights, I might consider punting, but that doesn't appear to be the case.
My EDD is now June 23-29, and I'll report back.