Yes, experiencing the same thing. There's a "Squeaky Break" thread in the Wheels forum - the key thing to try is rebedding the brake pads. Make a couple hard decelerations from 60 to 80 mph, then cruise a bit without touching the brakes to allow the pads and rotors to cool a bit.
Current: 2016 Silverstone M5, 2014 Anvil WW Jeep Wrangler
Previous: 2013 Monte Carlo Blue M5 (ED on 9/1/12), 2009 Carbon Black M5, 2006 Silverstone M5, 2003 Sterling Grey M5, 2000 Anthracite 540i6, 1998 Jeep Grand Cherokee 5.9Ltd, 1990 Eagle Talon TSi AWD, 1978 Mazda RX-7