iOS 9 is the upcoming ninth release of the iOS mobile operating system designed by Apple Inc as the successor to iOS 8. It was announced at the company's Worldwide Developers Conference (WWDC) 2015 on June 8, 2015 with an expected release date of September 2015. iOS 9 includes many under the hood optimisations and improvements over its predecessor. History iOS 9 debuted at Apple's Worldwide Developers Conference (WWDC) 2015 on June 8, 2015, with iOS 9.0 beta 1 being made available to registered developers straight after the keynote, and a public beta "coming soon" in July.  iOS 9 will see a public release date sometime in Autumn (Northern Hemisphere) Features and Changes iOS 9 includes enhancements to built in applications such as Notes which adds support for sharing from the Safari web browser, adding a list, making bullets, and changing the font. iOS 9 also includes a new Apple News app which ties in with other news sources such as The New York Times,CNN,Wired,and ESPN to bring one unified experience in the way users read, experience, and discover news.  Also, Apple Maps adds support for transit directions in Baltimore,Berlin,Chicago,London,Los Angeles,Mexico City,New York City, Paris,Philadelphia,San Francisco, Shanghai,Toronto,and Washington D.C. upon launch.  One of the other enhancements made to the Maps app in iOS 9 is that users get recommendations to points of interest, restaurants, etc. based on what time of day it is or the users' interests. There will also be an icon that will inform users if a retailer selected inside of Apple Maps supports Apple Pay or not. The name of the Passbook application was changed to Wallet and many new enhancements were made to Apple Pay such as Discover Credit/Debit Card support, loyalty card support, and support for Apple Pay in the UK.  iOS 9 also adds many productive features to the iPad lineup. These include Split-screen multitasking, slide over, and picture in picture support for enhanced multitasking similar to the experience found on OS X El Capitan. iPad users also receive better ways to manipulate text such as a new two finger gesture over the keyboard that helps the user slide around the page they are using as well as cut, copy, and paste with the included buttons on the keyboard.  Other things were changed that were not so obvious. The system font has changed to Apple's very own San Francisco font,used on the Apple Watch. Previously, the font used was Helvetica Neue,used both in iOS 7/8, and OS X Yosemite. The keyboard has been fixed so that when you deselect the shift key, you are able to see lowercase letter representations, in comparison to the all-caps representations on previous iOS versions. The multitasking pane has been redesigned on iPhone and iPod Touch. The quick contact information previously located in the multitasking pane was removed. As of iOS 9 Developer Beta 1, there is no button or function to kill all apps at once. Also noticeably, the newly announced News app (to replace Newsstand and compete with other News services such as Flipboard) is currently absent in the Beta version. Siri was enhanced in a major way with iOS 9. Siri is now aware of contextual info that a user is viewing on a page to provide better help to the user. For example, if a user is shopping for something online, the user can tell Siri "Remind me about This when I get home" and Siri will remind them to complete their purchase once they get home. Also, Siri is integrated into Spotlight Search to provide at-a-glance info to the user such as weather, sports scores, news, etc. Also, Spotlight provides info about places nearby that the user may want to visit based on time of day or location and provides suggested apps based on what is used most during that time of day (to compete head-on with Google Now). Spotlight can be accessed by swiping left of the 1st page of the home screen, similar to the previous search function on iOS 6. As of Beta 1, Spotlight is still available by swiping down as well. Siri also has a new feature called "Proactive" in which it helps users by doing things such as automatically adding an event to the calendar based on a message in the Mail app. Siri has been redesigned to be similar to the Apple Watch version of Siri as well.  iOS 9 also includes many under the hood improvements such as improved performance, better battery life such as a new low power mode, improved security such as advanced encryption and new 6-digit passcodes for Touch ID users instead of 4.  iOS 9 also introduces a new two-factor authentication for better security.  iOS 9 is available for all devices that were supported on iOS 8 and for the first time since iPhone OS 3 no device was dropped from one iOS to another.  However, devices powered by the A5 chip will have very limited support for many of the features on iOS 9 such as split-screen multitasking due to hardware constraints.