I agree, I found that it was not implemented yet from some looking into it, and then confirmed it here with someone else bringing it up. I really hope CommNet is implemented soon, at least as a toggle in the game settings at start. Deep space missions are hampered by every vessel needing to carry very large dishes. I feel having drone satellites lose connectivity and be uncontrollable due to poor mission planning or lack of creating a CommNet network both makes things feel more "Kerbal" when it goes wrong, and incentivizes and rewards careful planning and good play.
