Kaguya-sama wa Kokurasetai? Tensai-tachi no Renai Zunousen was announced on October 19th via the Kaguya anime's official Twitter account. It was further confirmed by a PDF file from the kaguya.love website that the original voice actors would be reprising their roles, and A-1 Pictures would be returning to animate the series.
The Season 2 announcement coincided with the Young Jump Culture Festival where Aka had a talk and the 'Suzuki Ryota Shut Up, Idiot!' Radio, where both events also revealed that Season 2 is in production.