That delayed Canadian Galaxy S III launch may have been a harbinger of US delays to come: Sprint has let Engadget know that it's running a "little behind" on shipments. The company still hopes to get all pre-orders of the 16GB model to customers by the official June 21st release, but warns that orders might slip by one or two days. We also hope 32GB customers weren't planning their schedules around the 21st -- the higher capacity won't ship until the following week. Sprint is citing both "overwhelming demand and limit
