What We Know So Far
New Class - The 3 Arcanist skill lines are Herald of the Tome, Apocryphal Soldier, and Curative Runeforms. Confirmed skills include Runic armor, Tentacle ranged shot, a combo/build-up points system, creating two portals for teleportation. Aesthetics based on Hermaeus Mora and Apocrypha setting.
Apocryphal Gate lets you open a pair of portals which you can jump between for in-fight mobility, or for creative exploration.
Abyssal Impact lets you turn your arm into tentacles.
New Zones - Telvanni Peninsula, the city of Necrom the Dunmer city of the dead is featured. The Daedric realm of Apocrypha is featured as well.
New World Events/Bosses
New Story - Hermaeus Mora and company need assistance safeguarding the secrets of Apocrypha from a mysterious Daedric entity. You'll meet a clanless Dremora called Torvesard whose motives are complex - is he friend or foe?
Vampire mercenaries called the Dusksabers prowl the Telvanni Peninsula, working for Magister Shelreni Baro. She's a typical Telvanni, wanting to climb the ranks of her house.
New 12 man Trial confirmed.
An increase in available Character Slots from 18 to 20.
2 New Companions, including one that is based off of the new class. (Argonian and Redguard)
All-In-One Attunable Crafting Station
Two-Person Endless Dungeon/Horde Mode potentially.
QoL focus/bug fixes for Quarter 3.
"Pre-made" Group Finder?
Ashur and Naryu will return as NPCs
New System yet to be announced for Quarter 4 unless it's the mentioned 2-man endless dungeon?