Toyota has filed a trademark with the EUIPO for the name "LF-Z". Since it's using the "LF" (Lexus Future) distinction this is going to be used on a Lexus vehicle.

The hyphen indicates this name is likely for a concept car, like the LF-X concept for example. If it was for a production car it would be LFZ.

Recently Lexus has teased a new concept car to showcase the brand's new vision and the LF-Z could be the car that does it.