I know the new Haswell rMBPs have just come out. While I would like to get one now, my current MBP is still trucking along just fine, even more than fine with the recent Mavericks update (it hasn't felt this fast since Snow Leopard). I know the current baseline 15" rMBP come with the integrated Iris Pro graphics with the ability to get the upgraded 15" with a discrete Nvidia 750M. Do you think by next year when the Broadwell rMBPs come out that there will still be a discrete chip upgrade option or will the whole 15" line just run on integrated graphics. I would prefer to get a machine with a discrete chip. Any thoughts and insight would be appreciated. Thanks.