Some have told G&E of a note inside the package that thanks you for your patience with Sprint during the US Customs/Apple debacle as welll as a gel case for your new phone.
It's not yet known if everyone is getting something, or if the accessories mentioned are all gel cases, but it's a pretty nice thing for Sprint to do considering that none of these delays were the carrier's fault.
Additionally, Daniel wrote that he took the case into a local Sprint store and was given the option of exchanging it for a different color.
If you got something different, or nothing, feel free to drop a line and let us know. I'll be interested to see whether other places that did pre-orders will do something similar for their customers.
Thanks to Jeff and Daniel (who provided the picture) who sent this in!