Sprint is currently in the process of building out its 4G LTE network, which is slated to launch in the second quarter of 2012. Citing anonymous sources, SprintFeed reports that the carrier is looking to launch a new LTE-enabled Windows Phone later this year. Earlier reports claimed that Sprint had shared its LTE specifications with Nokia and was looking to introduce a handset running Windows Phone 8 with a dual-core 1.5GHz Qualcomm MSM8960 chipset. SprintFeed‘s sources have reportedly confirmed that the MSM8960 Snapdragon chip will indeed be used in the handset, however the vendor behind the device remains a mystery. The new Windows Phone is said to be in testing and is slated for a fall release.