Screeching Front Brakes

An update:
My brakes were repaired under warranty to try to address the screeching. The pads were replaced; otherwise I'm not sure what other repairs were made. The feel of the brakes is better (firmer and more consistent) and they screech LESS, but they still sound like fingers on a blackboard if I am applying just a touch of the brakes or am gently easing off the brakes. The annoying sound is much better but there is still a screech. I'll wait a little while to see if the problem disappears as the pads get bedded. Otherwise, I may replace the pads and see if that resolves the problem.