I’m having trouble finding an answer to this, do you know if the newest 5e book (Xanathar’s Guide to Everything) is Adventurer’s League legal? Or would you know who would knlw the answer to that?It is

— Mike Mearls (@mikemearls) March 18, 2018

All products are assumed legal, but you must choose one + PHB to make an AL character

— Mike Mearls (@mikemearls) March 18, 2018