Web feeds (RSS/Atom) handling has also been improved. A new setting in the General page in the Options window allows to specify how web feed subscriptions should be handled.
I've been waiting for this. I'm downloading the alpha now, I'm going to try to set it to NetNewsWire. Lets see how that goes.
Update: Its either not working right, or I don't know how to use it, but I'll keep using Alpha 2. It seems faster, but that might be because a whole ton of extensions don't work with this release yet.