Yes, Pope Francis will change the Church. But changing the church is not a bad thing in this case, as Pope Francis will help improve the image of the Church. Any changes that Pope Francis will make will be positive ones, and will not be changing anything that currently works well.
Just the other week, Pope Francis did the equivalent of firing a Cardinal, one of the princes of the Roman Catholic Church. That is an act that, while not without precedent, very rarely happens. Francis is reaching out to help the poor and disenfranchised in a way that no other Pope in recent history has done. He is a true compassionate leader.