In the Bundesliga, it's not only Bayern that has made a major squad overhaul, there's Dortmund, Leverkusen, Frankfurt, Koln etc. who have also made a big squad reshuffle to welcome next season which is about to start
However, those type of amazing big transfers do not work that well all the time and could have a setback, the team would have to learn more about each other and have a better chemistry so it could lead to not a big difference from the current year for example. Sure they will get bundesliga again unless something shocking happens, but I am not expecting something shocking from them on UCL for this year.