Source: http://gizmodo.com/5920057/windows-phone-8-will-be-powered-by-a-snapdragon-s4-plus-processor
A couple weeks ago, Qualcomm launched tiers for the Snapdragon platform. The S4 Plus is built for a wide array of smartphones. It's dual-core, up to 1.7GHz, up to Adreno 305 GPU, it has built-in 3G and 4G LTE, USB 2.0, and Bluetooth. It's a nice bit of kit, and for the geeks out there it will be the Snapdragon S4 Plus MSM8960, specifically, according to Qualcomm.
It's interesting that they would only mention the Plus at this point, because Microsoft said today that Windows 8 would support multiple cores (up to 64 cores, which are of course powered by fairy earwax and happy thoughts). The S4 Pro is the one that can have up to four cores and an Adreno 320 GPU, but we've not seen any of these yet, so perhaps they're just waiting to announce that at a later date. Regardless, nice to know where your guts are coming from. [Qualcomm]