Newcastle just got what they wanted to get the got the ticket for champions league even if they didn't have enough potential for it.
But for the next season, I don't think Newcastle can stay on top of the table.
Next year is expected to be harder for every team but this doesn't mean that Newcastle are any lower comparing to the others. In fact Newcastle are trying to consolidate the team especially after money joined their management.
Manchester United are doing the same too. Liverpool and Chelsea are trying to repair the damage done this year. Spurs are useless whatever they try. The other teams aren't that bad but I don't think if they could compete top teams.
at every change of season there will definitely be tough competition between other teams and of course the whole team is trying to get new, stronger players to be able to strengthen their performance in the new season. so it's not surprising if you say this because it's true that top teams like Man United, Newcastle, Man City and Liverpool will definitely be tough competition this summer because judging from their previous performance it looks like NewCastle and MU want to compete strictly and of course they will compete with Arsenal.