For those of you interested in Sprint's LTE rollout and how it is going...

[Arcsylver]

I found this site which is a user supported news site with user reports of Sprint LTE upgrade info and articles.

Community Blog List - Sprint 4G Rollout Updates

Lots of useful information about how the Network Vision rollout is going as well as lots of good stuff on how to help out using your iPhone to collect data on signal strength etc.