While I do expect the new tires to put this car in a different league from standard Revuelto, I would caution against thinking the SV is close second to McLaren Senna. Even if the Hockenheimring lap time is real, it's not directly comparable to laps done by Sport Auto.
Assuming the new car is barely any lighter, with very modest amount of downforce, it should be couple of seconds slower with Christian Gebhardt behind the wheel. I'd put it just bellow SF90 XX.
It's funny to me how shortsighted Lamborghini was to cheat on the Nordschleife in the past. Now that there's more scrutiny than ever before, it's going to be very hard for Revuelto SV to even match the old Aventador SVJ Nordschleife lap time, let alone improve upon it, as you'd expect from a superseding model.
I suppose that explains why there's rumors about Hockenheimring and not Nordschleife.