Yahoo! has unveiled a new mobile version of their site. It can be accessed at http://new.m.yahoo.com. Check it out, compared to the old version:
Yahoo! has also released a mobile app for the iPhone. They previously have released Inquisitor as an iPhone app (of which yours truly is a big fan) as well as Yahoo! oneConnect as an app. Now, the new Yahoo! mobile app is basically their portal, app-style.