Is there any class balancing in the patches or just content?

Howdy,
Non-Vanilla pkayer here. I assume in addition to the content patches, Blizz did some class balancing. As the Devs release updated content, does this include those changes or is it only raid/dungeon content that is being updated?
Non-Vanilla pkayer here. I assume in addition to the content patches, Blizz did some class balancing. As the Devs release updated content, does this include those changes or is it only raid/dungeon content that is being updated?