Of course, it should stay.
I've been interested in this 1 of 25 limited edition for a while but I never thought I'd see a laptime for it.
I know it's a strange example but in Feb. 2011, Ford introduced a Super Duty pickup (turbo diesel) with 390 hp and 735 lb-ft of torque. GM shot back a month later with a Heavy Duty pickup with 397 hp and 765 lb-ft of torque. Ford made a software upgrade a few months later that gave them 400 hp and 800 lb-ft of torque. Now comes the weird part...
Ford allowed owners with the 390hp to get a free software upgradeto 400hp/800ft-lb.
So...if Mclaren wants to upgrade SLRs, it should still count as a (limited) production car.