iOS 9.3 is coming in the Spring and will introduce Night Shift as well as a number of other new features.
Apple Will Not Debut New iMac, 8GB iPhone 5s at WWDC
Dalrymple's most recent "Nope" is in response to a report from KGI Securities analyst Ming-Chi Kuo, who suggested earlier today that Apple would debut both hardware products at WWDC. According to Kuo, Apple had plans to launch an 8GB iPhone designed for emerging markets and a lower-cost iMac.
While an iMac update might not be imminent, there have been a few hints that a refresh is in the works for a later date, including a reference to new iMac models in the OS X 10.9.4 beta released to developers today.
It remains unclear whether the eventual iMac update will include a price drop, but it is not out of the question given the $100 price cut on the recently updated MacBook Airs.