"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
Sprint and Apple Working On "Issue" With iPhone Data Speeds
In the days after the iPhone launched on Sprint, a number of customers complained about extremely slow data speeds on Sprint's network. Sprint initially denied that there were any problems, but now a report from TheNextWeb suggests that is a problem with Sprint's iPhone data speeds:
Now it seems that an internal email has been sent to Sprint representatives, informing them that Apple and Sprint are working together on a “confirmed nationwide issue” dealing with the slow data rates many users are experiencing. There was no information about what the cause of the issues are or what the expected resolution date might be.The iPhone 4 and iPhone 4S broke Sprint's "device family" one-day sales record on October 14, the first day the phones were available on the network.
The email did contain a reference to a ‘Service Settings’ update, which sounds like it could be referring to the carrier settings file that contains access point info for the carriers.