There is a new Sage Advice article on the Wizards of the Coast D&D website by Jeremy Crawford.
Below is the excerpt of the article for your convenience:
Here is an except:
MM & DMG Errata
Last year, we released corrections for the Monster Manual and the Dungeon Master’s Guide. In the latest printings of those books—the sixth printing for each—we’ve made a few more tweaks. The changes are documented in the updated errata documents for the books:
The latest changes in those PDFs are each tagged with a “6th printing” notation. Search for that notation, and you’ll find each of the changes.
You already have a book that includes all the corrections if its credits page bears the following text toward the bottom of that page: “This printing includes corrections.” The book contains all but the sixth-printing changes if that page instead says, “This printing includes corrections to the first printing.”
As I said last year, we make changes and let you know about them for the sake of clarity and thoroughness, not because we think DMs should fret about every little tweak. If you’ve been enjoying these D&D books for a year or more, we recommend paying attention only to the changes that you think will enhance your enjoyment of the game.
Adventures for fifth edition D&D have been so popular that we have reprinted them multiple times, and we’ve started to make corrections to the latest printings. The first two of the adventures to be corrected are Hoard of the Dragon Queen in its sixth printing and Princes of the Apocalypse in its fourth printing. The changes are documented in the following errata documents for the books:
To coincide with some changes to Princes of the Apocalypse, we have updated the Elemental Evil Player’s Companion PDF. The content changes in it are minor: the erupting earth and whirlwind spells received their corrections, and the Svirfneblin Magic feat now matches the version in Sword Coast Adventurer’s Guide (wording changes only, not substantive changes).
Looking for more D&D 5th edition resources? Check out our resource page!