I've just noticed that Greyhawk and Dragonlance are now listed among the settings available for DM's Guild content, although neither actually has any products available yet.
Is this new, or have I just been out of the loop?
Where do you see that? They exist in the category for Settings along the side, for historical products and has for a while (Dark Sun and Planescape are in the same boat), but the DmsGuild document still says the following:
I don’t see anything that would stop me from publishing a Greyhawk or Zendikar or Dark Sun product on DMs Guild. Can I do that?
For now, DMs Guild is limited to the Forgotten Realms, Ravenloft, Eberron, and Ravnica settings only, although you can also publish anything for 5th Edition that (i) is generic enough to be used in a permitted setting without effort and (ii) doesn’t explicitly use anything related to another official Wizards setting.
For example, you can mention Forgotten Realms deities such as Azuth or Mystra, but you can’t mention Boccob, Vecna, Aureon, Lunitari, or any other deity from another official D&D setting that hasn't been permitted here.
Is DMs Guild going to remain Forgotten Realms, Ravenloft, Eberron, and Ravnica only, or will other settings be considered in the future?
As we did with Ravenloft when Curse of Strahd was released and with Eberron when Wayfinder’s Guide to Eberron was released, we intend to open up additional settings and IP as D&D 5e grows.
However, for the time being, only Forgotten Realms, Ravenloft, Eberron, and Ravnica are permitted.
What can I use in my titles on the Dungeon Masters Guild? When you create your own title for the Dungeon Masters Guild, you get access to a hoard of resources. Your work can use any of the 5th Edit...