Frontier Developments announces Planet Coaster will launch in Q4 of this year, offering the official release of their theme park simulation. They say they will make this available for pre-purchase on Steam on August 25th, and say around then all their early access customers will be transitioned to Steam. Word is, "Steam and Steam Workshop will form the backbone of Planet Coaster’s in-game community and sharing features starting with the launch of Planet Coaster Alpha 3 on 23 August. Following the launch of Planet Coaster Alpha 3 on 23 August, playing Planet Coaster will require Steam. Alpha players will find a Steam key available on their FrontierStore.net profile starting 23 August."