Ok, got some info from Tesla Motors Online Orders here goes .... the "old" $600 center console option which was order able from Tesla Gear has just recently come back into stock for remainder of existing orders, and the "old" center console is shipping out to Service Centers for install. Thus, if you did not cancel your "old" center console and replace it with the "new" console you will be getting the call. BTW, if you did cancel the old center console you would have received a $600 refund to your credit card in Mid-April.
Now, In addition, I was told that the "new" $1200+ center console will begin shipping once supplies of it are available. At present it is not available for shipment yet.
So, if you recently received a call from your Service Center, that call is very probably for the installation of the "old" $600 drop in center console.
I am passing this information along, it comes from a person in Telsa Online Orders... I cannot vouch for that person's expertise in this matter.