WordPress.com introduces new "subscriptions" feature, that let you track and read posts across multiple blogs, all in admin dashboard. "You can subscribe to a blog(s) really easily by using "Subscribe" menu in admin bar. By going up to admin bar, and clicking "Subscribe to blog", you'll be instantly subscribed and all posts will be added to subscriptions tab on WordPress.com home screen. Next time you visit WordPress.com, if new posts have been published on any of these blogs you'll see a "NEW" notification on your admin bar.
You can now use "My Subscriptions" menu to quickly access your subscriptions reader and catch up all latest posts. You can also head straight to your subscriptions by using new subscriptions tab on WordPress.com home screen," explains WordPress.
Also email and jabber notifications are all now under one roof, so it's easy to turn on email notifications of new posts, or get posts sent directly to you via instant messenger.