Just tried 2.2. Still has major bugs with unread/read counts. I even tried deleting and downloading new version.
When I switch back and forth between using Newsstand and google reader on my macbook, newsstand does not pickup the most recent read articles from google reader. I have lots of feeds/folders so maybe that causes problems. I tried sync button, starting app, etc. But unread counts are wrong.
Speed of loading new articles is much better.
Still no way (that I can see) to mark article unread.
So I am staying with MobileRSS for now.