Can't say I have any technical info, but mine have started doing this since about 4,000 miles (at which point the car was just under a year old). I have done a track day in it, but there is still plenty of meat on the pads. I find that if I do a hard stop the brakes will be fine for the rest of the journey, but next time I'm out the squeak will be back... Will mention it at my first service this weekend.