Not impressed by the numbers. They were either limited by the DCT's torque capabilities or they are playing dirty tricks by keeping more power for the future M5 Grand Coupe. I bet than on a straight line from a rolling start the new AMG 63 range is faster.

Copied from Bimmerpost: http://f10.5post.com/forums/showthread.php?t=544860

Official Specs / Stats:

560PS (552hp) / 680Nm (501tq) V8 twin-turbo
552hp at 6,000rpm (E60 M5 reached max 507PS at 7750rpm)
Max torque at just 1500rpm (vs E60 M5 which had max torque of 507Nm)
7-speed DCT transmission (manual transmission also likely, based on yesterday's photos.)

0-100km (0-62mph) in 4.4 seconds (E60 M5 took 4.7 seconds)
0-200km (0-124mph)in 13 seconds
M-Drivers-Package will increase top speed from 250km/h to 305km/h (127mph to 189mph)
Active M-differential with torque vectoring
Looks to break 8min lap at Nurburgring

Tires are 265/35 ZR 20" front 295/30 ZR 20" rea