Although the look hasn't been changed like the MacBook and MacBook Pro, there have been some major changes to the MacBook Air. First, the processor is faster and you can get more memory. There is more storage space. You can now get a 120GB Hard Drive or a 128GB Solid State Disk. It used to be an 80GB HD and a 64GB SSD. Much more space for much more stuff you can add on. I'm not sure but they PROBABLY DIDN'T add the glass trackpad on too, and the trackpad is PROBABLY NOT the button. They have also removed the Micro-DVI port and added a Mini DisplayPort instead like on all of their other notebook models. If I left anything out or made a mistake please let me know in this thread.