Charles Rosen complained in his book The Romantic Generation that there is no such thing as a good Chopin edition - that some were better than others, but even Henle left a lot to be desired. So, keeping this sentiment in mind, Peters is, perhaps in an attempt to reestablish itself as a respected editior, making a new Urtext (which I am sure a few of you already know). Available so far are the Preludes, Waltzes, and Ballades, and they are distinguishable on the cover from the regular Peters editions by the red Urtext bar in the upper left hand corner.

http://www.musicroom.com/se/ID_No/0202173/details.html

Has anyone purchased one (or all) of these volumes yet? I had a glance at one of my prof's books, and it looks to be a very thorough job.

Yes - currently, the Edition Peters Chopin preludes, edited by Eigeldinger is the best one out there.

mazurkas - the best one right now is the Polish National Edition, edited by Jan Ekier. But supposedly, Peters is coming out with their mazurka edition soon and will just as good, if not better.

I don't have any of the new Peters - I've just browsed through the Waltz score at the Frankfurt Musikmesse last spring - but it stands out together with the new PWM and the WUE scores edited by Ekier or Badura-Skoda (Etudes) as the best Chopin editions today. I've just ordered the WUE/Ekier Scherzi and the PWM/Ekier Preludes. I don't think I'll ever buy the new Peters, I cannot stand Peters typography. PWM is more expensive than Peters and WUE (on their website the scores are considerably cheaper, though).