Is “Ed Greenwood Presents Elminster’s Forgotten Realms” still accurate for the Forgotten Realms of the 1490s?
Yes. There are things in it that describe the Realms of the early 1300s DR, and things that reflect the Realms of the 1490s DR; they are either labelled, or haven't changed much.
The chaos of the Spellplague meant people everywhere clung fiercely to familiar ways.#Realmslore
— Ed Greenwood (@TheEdVerse) October 7, 2020