Funnily enough a change log was posted, same day as the updates went out. It was even tweeted
http://forum.feed-the-beast.com/thr...re-updating-any-pack.36499/page-2#post-574513
I find it interesting how many people seem to want to go "Zomg no changelogs were posted.. no one warned me of anything" When reading the thread linked in every update tweet would give you all the information you needed. In fact you ought to just book mark that thread. And the changelog website.
If the incredibly detailed changelogs that go over every single line of code that changed are going to be late I post a less detailed changelog on that thread to ensure the information is available.
I really wish more people would read the announcements threads before going on forum and reddit rants against the team. I have yet to see an instance where the information someone was ranting about wasn't actually available. They just didn't actually look.