The new PS4 (Model: CUH-1200), which is currently only available in Japan, features a smaller motherboard and GDDR5 memory configuration, making it more efficient than current models.
According to Digital Foundry, which translated a Pocket News unboxing, the new innards replace the 16 memory modules the previous PS4 models used, with just eight, helping it to suck up less energy.
The new PS4 model also includes a new Blu-ray drive design, a new HDMI controller, and a new power supply, which is 80g lighter. The amount of noise the PS4 fan makes has also been improved.
Sony will release a new "Ultimate Player Edition," in "select Europe and PAL territories," this summer which includes a 1TB HDD, although doesn't appear to house the new innards.
We expect that the currently Japanese only CUH-1200 will make its way West once stock of the current model begins to sell out.