Yes, it’s true. This is the latest feature in google-mail (or gmail as we all call it) and will help a lot to those who get lots and lots of emails. This is how it works, whenever you get a mail, it prioritizes it according to you reading it, replying to it and of-course just marking it as read. Thus, making it really intelligent after some time. If it make any mistakes, you can also define the priority of a particular email by marking it more important or less important .

Interested?? check out the official video and you can enable it once you get the New! Priority Inbox link on the top right corner of your gmail page.

The Video

The blog post on google : http://gmailblog.blogspot.com/2010/08/email-overload-try-priority-inbox.html