I am considering going from a MBA 2010 to 2012. I really dont want to chase this Apple upgrade thing but I do see enough change in the 2012 to warrant an upgrade. As a result I feel I wont need to change for at least 3 new cycles. But I am curious what you all feel are future enhancements that could occur and be useful/necessary. I suspect there will be a retina display eventually, but at a cost that I am not willing to pay. What else?