Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
The way I hold the Air now I rarely need a finger on the front glass. It already fits pretty perfectly in your hand with your thumb steadying it just on the chamfer. So I think reducing the bezel further is possible, especially if they reduce the weight further.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.