The latest content, pulled straight from the in-game update log — so it's current before the bigger sites catch up.
New crops, pets and mechanics arrive most weeks. As they land, they flow into the Seeds table and the Mutations page, and you can test their income in the calculator.
Update contents are read from the in-game update log. Game identity and developer (Gamecreates) per the official Roblox page; live stats via Rolimon's.