The new 15-inch Macbook Pro will feature the same Force Touch technology seen on the 13-inch MacBook Pro and a new AMD Radeon GPU, the Radeon R9 M370X.
While there are no official details regarding the Radeon R9 M370X, it is most likely based on AMD's 28nm Tonga GCN 2.0 GPU and has 640 Stream Processors and up to 2GB of GDDR5 memory paired up with a 128-bit memory interface. Apple's MacBook Pro comes with a 15.4-inch 2880x1800 resolution display.