Apple has updated its Retina MacBook Pro line, with new Haswell processors that edge their predecessors (also Haswell) by small amounts (200MHz), and with new base RAM for the low-end 15-inch model that doubles the amount of memory it carries within from 8GB to 16GB.
I have a 2011 Macbook Pro with a dying GPU. According to Wikipedia, all of the 2011 Macbook Pro models come with an AMD brand GPU. But according to this Ebay listing from a seller offering to repair 2011 Macbook Pros, he will "install a brand new updated Nvidia GPU which supersedes older models."
Is it possible to replace the AMD GPU in a Macbook Pro with an Nvidia GPU?
The MacBook Pro with Retina and 13-inch MacBook Air got some mid-cycle improvements under the hood today, with a new 2.6GHz processor for the 13-inch Retina MacBook Pro, new 2.4 and 2.7GHz processors for the 15-inch version, and 16GB of memory as a top-end spec on the larger Retina model.
Apple's MacBook Pro with Retina Display will soon be just the MacBook Pro, period. But this generation two version of both the 13- and 15-inch super slim notebooks with high-res displays is still something many average users will be weighing as an outlier possibility versus the more mainstream MacBook Air.