Not sure if correct category or not but when the new Macbook Pro's come out, obviously Mavericks will be shipped with it out of the box. My question is, what if you're perfectly okay with Mountain Lion but want a new model? Is it possible to downgrade? I know you can do a fresh install through boot up so can I do the same thing except with another OS via USB? I've only upgraded and never downgraded so not sure if it's annoying to do or as simple as it seems in my head. Thanks!