Next Elder Scrolls Online Update Titled 'Elsweyr' and Adds Necromancer Class

Bethesda has a big reveal planned for Elder Scrolls Online on January 15, 2019, but players have already data mined the biggest reveals: a new zone, the homeland of the Khajiit and the new necromancer class.

Venture to the land of the Khajiit in The Elder Scrolls Online: Elsweyr, our newest chapter, an epic story in an all-new zone. Face dread creatures from the past—Dragons!—and discover the dark skills of a new character class, the Necromancer, as you join with new friends and old enemies to save Elsweyr from war and devastation.
ESO reaches new heights of storytelling with a war against the Dragons that unfolds and builds over four quarterly releases to an unexpected climax.

While the above hasn't officially been announced yet, its practically been confirmed already by an official tweet from the The Elder Scrolls Online account saying "Cat's out of the bag!'. An official reveal and announcement is set to happen on January 15, 2019 on their twitch page Twitch.tv/Bethesda at 2PM PST / 5PM EST.

Further reading: Official Announcement