Over the years Oreo has come out with a ton of limited edition flavors - some faring better than others. While it's fun to see what crazy flavors they can cram into the cookie/cream combination, some just don't really translate well as Oreos, haha. I think it's safe to say that this Chocolate Peanut Butter Pie flavor is sure to be a favorite for most people!
As far as I know, this isn't the first time that there's been a peanut butter and chocolate Oreo - the most recent one I can remember is the Reese's version. The main difference with this chocolate and peanut butter Oreo is the use of the graham cookie, as opposed to the regular chocolate Oreo cookie. The graham cookie definitely adds to the "pie" concept of this flavor, and is a great background to the strong chocolate and peanut butter cremes. I'm not sure how long this flavor will be out, so if you also like chocolate and peanut butter I'd recommend getting it soon!