iOS 9.3 is coming in the Spring and will introduce Night Shift as well as a number of other new features.
Over One Million iPhone 3GS Models Sold on Launch Weekend
"Customers are voting and the iPhone is winning," said Steve Jobs, Apple's CEO. "With over 50,000 applications available from Apple's revolutionary App Store, iPhone momentum is stronger than ever."The sales figures match those of last year's iPhone 3G launch weekend sales numbers. Apple also reports that six million customers have downloaded the new iPhone 3.0 software which works on the existing 40 million iPhone and iPod touch models.