Well, Conte will continue to train the team during weekdays, and the system is already defined. Against Napoli Juve played exactly like last season.
And u are right, some teams have improved, Napoli doesn't have CL this time, Juve has, we were very lucky with (no) injuries, etc.
Anyway we are by far the best team. If we will win it, it's a another story. But the situation is clearly improved this year, since we have already improved at all weak positions: LW (Asamoah is 10000x better than DC/Estigarribia), RW (Isla is clear improvement over Litch, who is cut for RB), SS (I dont really like Vucinic at this position, Gio should be better) and CF (Vucinic is way better than Matri/Borrifuckinyellow). And we still should get a very good CF.
Summing it up: our biggest competitor worsened, a few teams improved, but we improved even more than them.