Sprint employee training material for the Galaxy Nexus leaked today suggesting the possibility of it launching before Sprint’s 4G LTE network. According to the training docs, the Sprint Galaxy Nexus will have 4G LTE switched off by default. It makes sense to have LTE switched off if you don’t yet have a network to support it, but it could also be to avoid having users in non-LTE markets (which will be many) from experiencing adverse battery drain — as the material suggests. The odds of you being in a Sprint LTE area once it launches is pretty slim anyways so I’m guessing Sprint customers probably won’t care about it being switched off.