The title of this blog post says it all—Quetoo has been Greenlit on Steam!
Currently, we're still aiming for a release in late spring or early summer, but if you're itching to pwn some nubs, you can try out the current beta versions over on the downloads page for the latest installer (Which requires Java 8) to download and play.
Stay tuned for more information and development progress as this project continues to mature and stabilize with the help of the team that has been laboring on this project to bring it to fruition.