SRI International
In December 2007, SRI launched a spin-off company, Siri Inc., which Apple acquired in April 2010. In October 2011, Apple announced the Siri personal assistant as an integrated feature of the Apple iPhone 4S. Siri's technology was born from SRI's work on the DARPA-funded CALO project, described by SRI as the largest artificial intelligence project ever launched. Siri was co-founded in December 2007 by Dag Kittlaus (CEO), Adam Cheyer (vice president, engineering), and Tom Gruber (CTO/vice president, design), together with Norman Winarsky (vice president of SRI Ventures). Investors included Menlo Ventures and Morgenthaler Ventures.
AirPlay
The current iteration is AirPlay 2, which improves buffering, allows audio to be sent to multiple devices in different rooms, and control by Control Center, the Home app, or Siri. (Previously this was only available using iTunes under MacOS or Windows.) Apple announced the new version at its annual WWDC conference on June 5, 2017. It was slated for release along with iOS 11 in the third quarter of 2017, but was delayed until June 2018.