Although the full story on this all-new mid-size sedan won't be told until its official reveal at next month's New York Auto Show, a new teaser image of the 2013 Nissan Altima does provide a better indication of what we can expect than the moody overhead shot released earlier. We've been led to believe that the 2013 Altima will display more evocative exterior styling. And judging from the look of its recast front end, new headlamp treatment and extended roofline that appears to be true. For the moment, all Nissan will confirm about the next-generation of its current best-selling model is that the 2013 Altima will deliver outstanding fuel economy, feature premium design inside and out, and offer an impressive selection of driver-focused technologies. The new Altima is slated to go on sale this summer.