Yes, Outlook 12 will support RSS news feeds! Say bay-bay to NewsGator and Attensa... In the pre-Beta, RSS is not fully functional: you can add new feed into Account Manager at the special tab RSS Subscriptions (and your feed will downloaded for the feed name), you can add/remove feeds into Send/Receive groups settings, but news feeds are not downloaded during send/receive. Btw, Outlook 12 seems not so cool, as Word 12 - see the last screenshot.

Microsoft Outlook 12 pre-Beta: RSS subscriptions

Microsoft Outlook 12 pre-Beta: Send/Receive groups for RSS subscriptions

Microsoft Outlook 12 vs Microsoft Word 12