Read recently that the new 127M engines on the 600 72 get a 'boost function' of 5 percent, that can be used for additional power as needed when called for at takeoff. And they get a single engine ceiling increase of 1,000 ft. Max t.o.w. of 23,000 kg. Is this new then, or hype ? With the Cat 111A autopilot it all sounds good at this point in time..