iOS 9.3 is coming in the Spring and will introduce Night Shift as well as a number of other new features.
Virgin Mobile USA to Begin Selling iPhone 5 on June 28
As for the iPhone itself, Virgin Mobile is offering a $100 discount off of Apple's standard unsubsidized pricing, selling the 16 GB iPhone 5 for $549.99 with the 32 GB model priced at $649.99 and the 64 GB model at $749.99.
We noted last October that Apple had Virgin Mobile-specific iPhone 5 models ready to go, although it was unclear at the time when they would be released and it remains unknown why it took approximately nine months after the device's launch to appear at the carrier. The iPhone 5 has been available through other prepaid carriers such as Cricket since as long ago as September.