Valve is giving up on the idea of Artifact 2.0. This was their attempt to perform drastic overhauls to Artifact after the game was deemed a failure by fans and developers alike. It was a reboot, of sorts. Valve says that they have "accomplished most of (their) game-side goals, (but they) haven't managed to get the active player numbers to a level that justifies further development at this time."
So, development on the Artifact 2.0...