I have a friend who is a heavy Photoshop and Lightroom user. Her 2012 2.6 GHz Retina Macbook Pro (with GeForce GT 650M) is soon out of warranty. So she is thinking about selling it to buy a new one. Is the latest 2.5 GHz Macbook Pro (with Radeon R9 M370X) worth the upgrade? The difference between the i7-3720QM and the i7-4870HQ seem to be minimal. Will there be any improvements in speed for Photoshop or Lightroom due to the Radeon card, i.e. can Photoshop better use the Radeon GPU to accelerate things? Will the next version of the MBP be more likely to bring about better GPU accelerated Photoshop speeds, i.e. optimized for Metal etc? Any insights would be greatly appreciated.