I'm sure Flavia is right, the team will stick with Tito for next year. Objectively, winning Liga, getting to the semis of both CL and Copa are not reasons to prematurely end the manager's employment. Tito is talking about next season being different, he admits the need for significant change.
Now, does he have the imagination, guts and the backing from management to reshape the squad? I do worry that Tito caters too much to the established Barca superstars, rather than going with the players who are the best choices right now. Also, he has not shown the committment to developing the young players that was such a huge part of Pep's success.
The only rotation player who left last summer was Keita, and Keita made that happen. Song has replaced Keita, roughly at the same level. Pretending that Song could all of a sudden play CB was absurd, both Tito and management have to be blamed for that. Alba is a very fine, very Barca-type addition, but I think the jury is still out about whether he is too much like Alves, and whether the team can afford to field two offensive, tiny fullbacks against top opponents. I hope the changes coming up this summer are bigger and more successful.