Can I upgrade my Mac in any way?

I have a 2011 Mac and I was wondering if I could take it to an apple store or somewhere to get a new one for less. I know you can do this with iPods, iPhones, etc. But I have never heard about it for Mac. I really want the 2013 Mac. Answer soon!

Yes you can exchange. But the best choice is, sell your laptop to some one you will get a lot more money than the apple store will give to you. Then add some money from your pocked and buy the 2013 MAC.