I think this year will be a very intense one, we will surely see a decline from Inter who will have a crazy decline, and Napoli who instead will insist on winning another scudetto, but in my opinion the real surprise this year will be Como, mark these words 
A friend of mine here also said the same thing as you. One of the surprises that will occur in the upcoming Serie A is COMO. But I understand the reasoning, because last season, when this team was newly promoted to Serie A, we immediately saw that they were able to fight well and even managed to finish in the top 10. And what's really interesting about Como is that their squad depth is actually quite average. But their coach, Cesc Fabregas, really got this team playing to its maximum potential. So last season, Como surprised us all a bit with their performance. Moreover, their attacking style of play always managed to overwhelm even strong teams. I think Como will be able to stay in the top 10 again, but I'm not sure about any other surprises. 
However, in preseason, we also saw Como perform well in every match. And hopefully, they can do the same in the actual season.