The new "Smart Labels" lab feature automatically filters messages according to "Priority Inbox" information. You'll get Bulk, Notifications, and Forums folders:
Last year, we launched Priority Inbox to automatically sort incoming email and help you focus on the messages that matter most. Today, we're launching a complementary feature in Gmail Labs called Smart Labels, which helps you classify and organize your email. Once you turn it on from the Labs tab in Settings, Smart Labels automatically categorizes incoming Bulk, Notification and Forum messages, and labels them as such. “Bulk” mail includes any kind of mass mailing (such as newsletters and promotional email) and gets filtered out of your inbox by default (where you can easily read it later), “Notifications” are messages sent to you directly (like account statements and receipts), and email from group mailing lists gets labeled as “Forums.”
If you already use filters and labels to organize your mail, you may find that you can replace your existing filters with Smart Labels. If you're picky like me and still want to hold on to your current organization system, Smart Labels play nice with other labels and filters too. On the Filters tab under Settings, you'll find that these filters can be edited just like any others. From there, you can also edit your existing filters to avoid having them Smart Labeled or change whether mail in a Smart Label skips your inbox (which you can also do by just clicking on the label, then selecting or unselecting the checkbox in the top right corner).