We are all expecting a new horse related expansion pack to be released any minute now, but today, June 13th, 2023, we just got a surprise update. The Sims 4 1.98.158.1020 Update fixes issues with The Sims 4 Gallery and also re-enables its access to MacOS users on El Capitan and Sierra (Update 1.98.158.1220 for MacOS).
