A small OTA update started rolling out the HTC EVO 4G on Sprint this morning that brings but one enhancement to the device: the Sprint Connections Optimizer. Never heard of it? It's actually pretty neat.
It's basically a location-aware service that can enable/disable Wi-Fi and WiMax based on user defined variables (much like Tasker or Locale). For example, it can automatically turn on Wi-Fi when it knows you're at home or the office.