Hi Ive got a Macbook pro 13 inch.....its gonna be a year since I bought it in november and looking at system info its a 2,4 Intel core i5....says end of 2011.... So how many new versions are there?? is there two new version? one that came out a while back? when? and one thats just come out now with retina display? My girlfriend is gonna buy the macbook pro, but not the one thats just come out not with retina, the one before that.....what are the differences between mine and the one shes looking to buy? thanks and sorry for the confusion!