Hi everyone, I lurk here off and on but decided to join to ask this question: I'm not a very tech-savvy person, but I always use macs. I had an old ibook that quit on me last year so I bought the new macbook pro. I thought about it and decided that from then on, I may as well just always upgrade to the newest macbook every time a new one comes out and sell the old ones online each time. Well, the time has come with the upgraded laptops. Since this will be my first time doing it, I was just curious what the differences were in the old macbook pro (the one sold at the end of last year) and the just released one, in layman's. All the changes/upgrades and any differences in cost. I have the 13" pro and am planning on getting the new 13" too.