Dawnseeker, could we get patch notes and reasons to the "fixes" on 6/8/13?

In particular:
- Arena...only experience now, is this intentional?
- Banishment Boosts: now we can only get to 80%buff with credits, why?
- With all the features and fun, why are the avenues of getting credits/coins/gems drying up?

Would love some insights into these "fixes".