The next DLC for Rise of the Tomb Raider features the famous Croft Manor and zombies. Season pass holders (and people who purchase) will soon get access to two new modes for the game. "Blood Ties" will be an addition to the game's story mode and will feature Lara exploring the house in which she grew up in. "Lara's Nightmare" will be Croft defending the manor from an undead invasion which looks pretty intense from start to finish!
See both featured in the trailer below. I'm more excited for the zombies than mansion exploring! The DLC is expected October 11th.