Even though the new season hasn't started yet, I believe Manchester City, Arsenal, Liverpool and Manchester United have a big chance to be the favorites for the title. The main favorites are Manchester City, followed by Arsenal, but I doubt the other two teams I mentioned as well.
If Manchester City are really capable of winning the Premier League title next season, then it will be their 4th title in a row, too good to be true. But I also believe that some Premier League teams will try to stop Manchester City's dominance, even if it's difficult.
Yes, we are aware of each team's performance from the previous season, and we have not noticed any unfavorable changes. However, rather than positive changes like the acquisition of outstanding players, I will say that the teams you mentioned above should be expected to perform well and be the ones to contend for the title. However, don't be shocked if a weaker team that we didn't anticipate winning the title goes on to do so, as Leicester City did in the 2015–16 season. No team should be underestimated for a championship victory.
Manchester City, as you mentioned, has the potential to win the Premier League title the next year. No one will question it as they presently have the league's strongest team, and I also think they'll give it their all to win it again the following year.But let's wait and see how preseason displays by Manchester City, Arsenal, Liverpool, and Manchester United, among other teams, go.