If the technology for Sprint to roll out the iPhone5 is in place whereas the LTE isn't then I don't think its out of the question that $20 billion guaranteed is essentially being paid to Apple to release their version now rather than sitting on it until all version are ready for release in Q1. Sprint pays big bucks to get a leg up on the competition in hopes of stealing customers who have to have the latest and greatest, while Apple gets a big fat check to release something they already have done rather than sitting on it until the other versions are complete.
The biggest issue imo is the timing, doesn't seem like Apple would want to rain on their own parade releasing the 5 and the 4S at the same time.
The biggest issue imo is the timing, doesn't seem like Apple would want to rain on their own parade releasing the 5 and the 4S at the same time.