Wizards of the Coast would be fools NOT to support Matt Mercer and Critical Roles campaign setting, having said that, I don't watch other people play RPGs (it just makes me want to play them more) and I probably won't pick it up as I've never used his setting from Green Ronin. But, I 1000% support Wizard's decision.
So far he has created documents for Feats, Factions/Organizations, and Wizards. If you enjoy his labor of love think about backing his Patreon, I just did.
James M. Spahn's Kickstarter for Hero's Journey 2nd Edition finished up last week (it's being published by Gallant Knight Games) and I just received the PDF tonight!
The Hero's Journey 2E is my favorite version of Swords and Wizardry and as much as I love Adventures in Middle-Earth for 5E, I might run this instead.
You can buy the PDF here and I cannot recommend it enough.
