Only a little when my last pads were new on (DS2500s) but I have the Porsche 'anti rattle shims' fitted into caliper pistons and use CeraTec as an anti-squeel compound (copper grease rots the rubber dust seals on the pistons!). The previous low-speed squeel went away after about a week or two.
I just fitted Pagid RS4-2s and new discs at the weekend and have only had the tiniest amount of squeel but that was only with light breaking when cold at about 30 mph and I'll bet that it will dissapear soon.