The Tyranny of Dragons rerelease for D&D 5e is out today, including errata, an updated introduction, and concept art.
Owners of either HOTDQ or ROT on D&D Beyond will get the updated content for free (https://www.dndbeyond.com/forums/d-d-beyond-general/bugs-support/49456-five-heads-are-better-than-one-tyranny-of-dragons), but Roll20's only granting that content to those who've purchased the combined bundle, not each adventure individually (https://app.roll20.net/forum/post/7855107/wotc-tyranny-of-dragons-bug-thread).