Their first match is against COMO, a promoted club who is said to have made a lot of good signings in the transfer window this season. We can see how Motta's tactics will play in the first match. I expect a good performance from Juventus because I don't think anyone would have predicted COMO to win that match.
Como is actually an interesting team recently. Their main transfer policy has been like to sign some old but decent players. Pepe Reina is an example for that but he is 41 years old now.
Audero is a good signing for the GK role by the way. He would probably be the main GK. They have signed players like Varane and Belotti as well. Really great moves. Varane is the most valuable player in the squad by far.On paper, of course one expects Juventus to win anyway. But so far I didn't see them ready for the new season. At least the friendly results tell us that. I would like to be proven wrong by Motta of course. Let's see.
Some doubts regarding Juventus are also normal. but Juventus has better squad depth. So it is very likely that Juventus will still be favorites and win the match. So I think betting on Juventus is the wisest thing to do.