Aitch Eye said:Has Monte Cook ever commented on whether he's gotten permision to mention D&D in his press releases? This quote from the press release for BoHM seems to sidewise imply compatability:
"As a senior game designer with Wizards of the Coast, he co-created the new edition of Dungeons & Dragons (the basis of the d20 System) and authored the Dungeon Master's Guide, The Book of Vile Darkness, and a d20 version of Call of Cthulhu."
http://montecook.com/mpress_BOHM_PR.html
I think that's a bit different. It's a list of credentials with no direct relationship to the product. It could just as easily say "created Ars Magica" if the author was Jonathan Tweet instead of Monte Cook.
In Valar's press release the mystery author, and Anthony Valterra specifically, specifically mention compatibility with Dungeons and Dragons in relation to the OGL product.