Don't know when it'll be done, but it'll be on DM's Guild (the D&D storefront of DriveThru RPG). Lore questions abound, which means this thing is going to be THOROUGH. :}#Realmslore — Ed Greenwood (@TheEdVerse) November 7, 2019

Is it too much of a stretch to think there might even be a link to even older and deeper tunnels that could maybe be traced to ancient Ilefarn? — I am a Hotdog (@dhodgs) October 8, 2019

1)

It’s not too much of a stretch at all. ;} Those Underdark monsters had to come up via SOMETHING.

And when it comes to Illefarn, I can recommend two Realms releases to everyone: UNDER ILLEFARN ANEW by Eric L. Boyd (http://www.candlekeep.com/downloads/UnderIllefarnAnew.pdf …) and the forthcoming2)

…CROWN OF EARLANN by Alexander Boyd, Eric L. Boyd, and George Krashos.

Essential Realmslore!#Realmslore — Ed Greenwood (@TheEdVerse) October 8, 2019

I did. (And the draft I've seen has over 600 pages.) — Ed Greenwood (@TheEdVerse) October 8, 2019

No, this is an uber-sourcebook, mit adventures! — Ed Greenwood (@TheEdVerse) October 8, 2019

Heh. Wait for CROWN OF EARLANN to elucidate a bit on who/what the Terraseer was.#Realmslore — Ed Greenwood (@TheEdVerse) October 8, 2019