See atttached link where forum member got verification from Tesla saying that Black Onyx will delay delivery. The latest news reported on this forum is summer is earliest possible delivery. Also for those waiting for a VIN. No VINS AT ALL have been issued in four weeks. So far VINs have only been issued for cars that have these options:
P90D or P90DL
Premium Option
Auto Pilot Option
no Black Onyx Wheel
other options will not effect delivery time
There are still some with this configuration who have not yet got VIN but all who have gotten VINs have this configuration.
Changing to non-Black Onyx could send you to bottom of your groups list, no one knows.
Black Onyx Wheels - Page 4