Inter Milan are the strongest team in Serie A most of recent seasons and they won Scudetto last season very convincingly. This season they will continue to be a best team for Scudetto but challenge will come mostly from Juventus. In the ranking table now, there are some small clubs behind Inter Milan and Juventus but they are not my concern because they will almost impossible maintain these high positions in future. My notice goes to Napoli with 6 points now, only 1 point less than Inter Milan and Juventus.
Napoli won Scudetto two seasons ago, fell down seriously out of top four last season, but they seem to be ready for a come back this season. Winning Scudetto can be not possible for them but top four is in their hands. With Lukaku's ability to score goals, Kravatskhelia's ability to provide good passes, Napoli will have good power in attacking and they can win many matches.
Inter are strong but be careful not to underestimate my beloved Juventus, this year we are motivated to annoy our Inter friends.
Regarding Napoli, I'm really sorry, it seems like centuries have passed since the Scudetto and I think that the Napoli fans are really sad and depressed.
Something is changing: Antonio Conte has put his heavy hand on the team and I predict improvements.