Disclaimer: Newbie Alert! For give my ignorance - I am a total newbie to Macbooks. Is there really such a thing as a 2016-model Macbook Air? I got one from BTB today and the staff there said I was getting the 2016 model. Although the RAM is at 8GB, the About page indicates that one I got is an Early-2015 model. Could it be that it really is an Early-2015 model with 8GB of RAM and was just passed on as a 2016 model? Have I been duped? Sorry for all the noob questions and thanks in advance!