IOS 5



iOS 5 is the 5th major release of iOS for the iPhone, iPad, and IPod Touch. iOS 5 was released on 12th October 2011 and can be downloaded at iTunes.

New Features include but are not limited to:
 * Notification Center
 * iMessage
 * Newsstand
 * Reminders
 * Integration
 * Can play content while device is synching with iTunes
 * Group by Album Artist option in Music
 * Shortcut to Camera from Lockscreen
 * Able to flag emails
 * Reading List in Safari
 * Search within a web page (iPad 2 only)
 * Private Browsing
 * iCloud
 * PC Free
 * FaceTime without a SIM (iPhone only)
 * Hide keyboard (iPad only)
 * Tabbed Browsing (iPad only)

Trivia

 * Initial release on iPhone 4S
 * iPhone 3G and 2nd generation iPod Touch aren't supported
 * IPhone 3GSiPhone 4, iPhone 4S, iPad, iPad 2, and 3rd/4th generation iPod Touch are fully supported

5.x.x Releases

 * iOS 5 (12th October)
 * iOS 5.0.1 (10th November)
 * iOS 5.1 released March 7