With the release of T5 content we've received some questions and what better time to answer those than right before release!
Yes, those will be available with T5 release.
Arena points will reset when season 2 starts. You'll keep honor points (up to the regular 75k cap).
Yes. Each creature that has a chance to drop a card will be able to drop any of the cards. Aces will be reserved to heroic end bosses as usual.
Yes, we're working on hosting a 3v3 arena tournament. We'll release more details about the date, how to sign up, the format and prize pool in a follow up announcement soon.
We hope that this answers some of your questions, if we've missed anything please don't hesitate to let us know!