University going to start in August and I'm planning to buy a mbp, probably a 15 inch one. Not planning to buy the retina ones coz I'm planning to do some internal upgrades myself, which is cheaper and only the non-retina models allows that. The thing is , Apple didnt refresh the mbp lineup during wwdc and since the haswell processors are around the corner, i'm predicting an event in september or latest october. I'm worried because I don't want to buy a last-gen mbp and lose out on the new ones just 1 or 2 month after. Anyone can give me some advise??