"The following items are designated Product Identity, as defined in Section 1(e) of the Open Game License Version 1.0a, and are subject to the conditions set forth in Section 7 of the OGL, and are not Open Content: Dungeons & Dragons, ... tanar’ri, baatezu, ..."Dear WOTC, I assure you that you really don't have to worry; this is like someone putting a high-end car alarm in a beat-to-shit, rusted-out '82 Honda civic.
Some lame duck attempt to weasel out of the 80s satanic panic spotlight is considered an "intellectual property asset?" Hohoho. Has anyone, ever, in the history of D&D actually used those terms while actually playing the game?