For the 15", I agree with this. If they used a chip with 5200 graphics, then I don't see them adding discrete graphics. Would rather have discrete graphics kicking in when needed; GTX780M option would be great..
I'm going to be very disappointed if Apple does not at least announce MBPr 15" road-map at WWDC. Doesn't have to be released immediately, but at least let us know what is coming.
haha, of course the power of a GTX 780m would be great, but to handle it the rMBP would have to be about 2-3 times the size. same goes for the power adapter. The TDP of the GTX 780m will probably be higher than 100W! (the MagSafe Power adapter can handle 85W [this is for the whole computer])