This is a very "un-Apple" approach, I'd be surprised to see a configuration like that. Instead I'd only see the potential for Apple to switch the macbook line t

This is a very "un-Apple" approach, I'd be surprised to see a configuration like that. Instead I'd only see the potential for Apple to switch the macbook line to a specially designed ARM chip. They wouldn't say it's to make it cheaper to manufacture, instead they'd claim "now that we control the entire hardware stack we can do things we couldn't do before". They'll claim their special ARM chip gives almost 2x battery life, better security, etc. And since most Pro's aren't using macbooks there'd be less fear of incompatible pro software- as long as you have the iLife suite, ms office suite, adobe suite and browser running you'll satisfy 95% of macbook users. Apple would then use this transition to pressure Intel into much lower prices for pro-range cpu's or at least pressure them to do things with their cpu's that a next-gen ARM chip couldn't. I don't see Apple blurring the lines of mobile/desktop UX simply because the ARM chip now enables the opportunity but I do see them moving their macbook line to ARM for cost reduction and increased leverage over Intel.