It is truly a great thing for such a young coach to become such an undefeated champion. He has done a great job with his career, becoming even more popular than when he was a football player. If the team continues to stay like this, they will be a great candidate to be the best team in the world for many years to come.
Bayern, the long-standing Bundesliga champion, has now lost this season

I say his job is now finished, even though he still has 2 more matches to play, and both of them are finals which will really determine whether they become champions or not.
They are already champion after winning the German Bundesliga. Each of the remaining two matches will make them champions in different categories as they are different competitions. So it is wrong to say they will become champions after they win the next finals. Maybe you are saying that the German Bundesliga trophy is not worthy of a trophy?
I want to see them next season, whether Xabi can be consistent with what he showed this season, or vice versa. they will be in the Champions League, and that's what I'm waiting for, because there they will have tougher opponents, because the Champions League is the place for the best teams this season and they will be there.
Next season will really be a major test for him because people will want to see if it was really their skill or mere luck that earned them the prestigious reputation this season. I actually believe that it was luck that brought them this far because they are not the only team with access to luck. They played well and were prepared for the years assignment. Lucky might play a part but very little can be attributed to luck.
What I expect next year is for them to maintain this winning tempo even up to the point they will start playing big names in the Champions League. If they are defeated one or two times, they might slow down a little because that will weaken their morale.