I have thought about this since the last update dropped, and while we were talking about if Fujino could finish the game with part 2 or if he would need to make part 3 happen, but now that it has been practically confirmed that we will get a new part at some point, I believe we will get confirmation about the Hebishima situation as part 2 comes to a closure.
If the 'get rid of Hebishima' poll ended up winning, than I can’t see him making it to the next game still involved with the poll, so one way or another we will known.
If Sinon or Sugu end up pulling a School Days ending on him, I'm betting all my imaginary savings that it will need to happen during the climax of part 2. (What would happen to their character during part 3? No idea.)