At Last Master Jeremy released the Official Errata for MM and DMG for Dungeons and Dragons 5th edition
Some of the important changes for Monster Manual:
- Damage Resistances/Immunities
- New rules for Legendary Creatures
- Ancient Dragon revised XP
- Death Knight undead nature
- Empyrean XP
- Flame skull immunities
- Half -Dragon hard revised
- Intellect Devourer
- Rakshasa immunities
- Vampire spelcaster
http://media.wizards.com/2015/downloads/dnd/MM_Errata.pdf
Dungeon Master’s Guide changes:
- Crafting a Magic Item
- Attunement
- Magic Weapons
- Gauntlets of Ogre Power
- Spell Scroll
- Wand of Paralysis
- Combining Game Effects
- Poison, contact, inhaled, Injury
- Monster XP Table
http://media.wizards.com/2015/downloads/dnd/DMG_Errata.pdf
One more thing: there’s a new Sage Advice Compendium 1.05 that has also been updated here
http://media.wizards.com/2015/downloads/dnd/SA_Compendium.pdf
You can download directly here:
http://media.wizards.com/2015/downloads/dnd/MM_Errata.pdf
http://media.wizards.com/2015/downloads/dnd/DMG_Errata.pdf
http://media.wizards.com/2015/downloads/dnd/SA_Compendium.pdf