The SimsTM 4 version 1.13 (released December 2015) adds a new feature that will disable all Mods when the game is updated via Origin.
Source: The Sims 4 - Mods and game updates The Sims 4 - Mods and game updates Learn about the new disable Mods feature, the Maxis policy towards Mods and how to safely re-enable Mods. Included below is the whole text, but basically it says that Mods will be disabled during the latest updates. The first of which concerns if you have mods installed in game.
EA made one of two announcements that will be coming with the big patch in December.
