Is Szass Tam still in command in Thay in the 5E era?

Is Szass Tam still in command in Thay in the 5E era? I mean officially, of course-he’s been top dog since well before 4E as I recall.He's still brooding from an increasingly uncertain throne out east. Wonder what he is up to…

— Mike Mearls (@mikemearls) August 7, 2017