Holy shit, that's one hell of a renewal. The season 3 finale did leave me disillusioned with the messy story structure and the mundaneness of it that barely lends itself as a proper season finale. It made me apprehensive about the future of Rick and Morty going forward, and upon hearing this news, I'm not exactly relieved. I feel that this maybe forcefeed the writers more than they could chew and it leaves more room for lackluster writing, though maybe I'm being overly cynical. Hopefully they can make good use of this very tall order by properly fleshing out the storylines that lead up to a satisfying finale.