For future reference, you can always aim your questions at others
Why hasn't it been posted:The update hasn't been posted since it brought a lot of fixes to the servers and Nonsense wanted to test them. It might not be finished yet, or he may have not felt like posting tonight. It will come soon.
Gold Bar EventIt hasn't been that long since the last one, and I don't know when the next one will be. They seem to only occure on Weekends and there wasn't one this weekend. Just wait and see - we will have a planned smash tournament which never happened.
New items in Crates/Chests:There is always a period of time after new items are added to the servers before they appear in chests/crates. As it stands, you can only purchase them in the store.