The new patch notes have been posted up. Check them out!
Seriously, these patch notes are huge. They are well organized though so you can find what you are looking for quickly. They are far to large for me to provide a decent summary, so head over and read them for yourself. I will provide some reviews of the new content as I get to play it. I am excited!
Expect a long patch. I have been going for over half an hour and I am only at 30%.