Necromancer Games, which I believe is fully owned by Frog God Games (but I could be wrong, and perhaps I am) just launched a Kickstarter in the early morning hours for new 5e material.
Yeah, there is currently no licensing agreement / OGL specifically for D&D 5e at the moment, but much like The Wizard's Amulet update and release for 5e, I suspect this Kickstarter will be working under / behind the OGL. Time will tell, won't it?
Three books are in the mix (below is from the Kickstarter page)
5th Edition Foes. It’s going to start with 200 monsters in it.
Quests of Doom, an adventure book we estimate at 180-260 pages, depending on stretch goals achieved. It will contain two updates from third edition books (Demons and Devils, Vampires and Liches) that contained a total of six adventures. PLUS, it will contain 6-12 new adventures under the section titles "Bugs and Blobs", “Giants and Dragons,” “Men and Monstrosities,” and “Elementals and Lycanthropes.”
Book of Lost Spells. This sourcebook will contain hundreds of spells, and we estimate that it will run 250 pagesSo, any possible issues highlighted?
In this Kickstarter, you’re almost certain to get something that’s slightly different from the way we are planning it right at this moment, because we’re raising money and starting work before the whole game is even out on the shelves. Page counts will vary depending on the length and format of the material, licensing requirements might alter the content of updated material, and so on. (emphasis mine)
Oh yeah, it's going to be an interesting ride...