Yes. I noticed that a while back
I just released an RSS feed reader that is integrated with Mountain Lion's new notifications. Instead of checking some RSS reader all day, just sit back and wait for notifications. You can download it from: http://www.etresoft.com/etrefeed
Unfortunately, Apple is way behind on reviewing apps in the Mac App Store. I have released a time limited demo until Apple gets caught up.
Disclaimer: I may receive some form of compensation, financial or otherwise, from my link.