Will Elminster make an appearance in 5e?
— Hanno Ziegler (Ronin-sama; Donut) (@ronin_sama) July 6, 2018
— Christopher Perkins (@ChrisPerkinsDnD) July 6, 2018
Well, Elminster did appear in THE HERALD, SPELLSTORM, and DEATH MASKS, all novels set in the 5e era. So he's around, all right. ;}
— Ed Greenwood (@TheEdVerse) July 7, 2018