Yes, the TDM will be game canon! As of right now, since apps will always be open and rolling, there aren't scheduled TMDs planned for the future, but characters who test drive in the current TDM but don't app will start to disappear one by one throughout spring break, with the characters who stay not knowing what happened— if they found a way out, or if something happened to them, or if they just passed through the front doors like all the other npc students. This may be subject to change in the future!