Sprint’s upcoming HTC EVO 4G LTE handset is expected to be up for pre-order come 7th of May, but when will the device launch? Many have speculated the 18th of May to be a possible release date and thanks to leaked photos of the upcoming marketing materials, it’s starting to look as if the 18th of May date could very well pan out. Thanks to the folks at GoodAndEvo, they have managed to get their hands on what appears to be leaked marketing materials for Sprint’s upcoming HTC EVO 4G LTE. Apparently Sprint’s stores are expected to start getting them on the 14th of May so an 18th of May release would not be completely out of the question. Will the date hold true? We’d certainly like to think so but until we see the launch for ourselves or hear from Sprint, we will refrain from speculation and suggest that you not get your hopes up just yet.