Apple's much-anticipated iOS 5 firmware for the iPhone, iPad, iPod and iTouch is now available for download. To install the new operating system, launch iTunes on your computer and click the "Update" button.

For a direct download, click your device below:▪ iPhone 4S ▪ iPhone 4 GSM ▪ iPhone 3GS ▪ iPad 2 WiFi ▪ iPad 2 GSM ▪ iPad 2 CDMA ▪ iPad 1 ▪ iPod touch 3G ▪ iPod touch 4G

The release features over 200 new features, many not dissimilar to social media interface features like a notification center and news outlet direct access. As a markable victory for social media champions, Twitter has been directly integrated within iOS 5, allowing users to tweet directly from Camera, Photos, Maps, Safari and YouTube.

See the full update features list from Apple below:

iOS 5 Software Update

This update contains over 200 new features, including the following:

1 Notifications

1.1 Swipe from the top of any screen to view notifications in one place with Notification Center

1.2 New notifications appear briefly at the top of the screen

1.3 View notifications from lock screen

1.4 Slide the notification app icon to the right on the lock screen to go directly to the app

2 iMessage

2.1 Send and receive unlimited text, photo, and video messages with other iOS 5 users

2.2 Track messages with delivery and read receipts

2.3 Group messaging and secure encryption

2.4 Works over cellular network and Wi-Fi*

3 Newsstand

3.1 Automatically organizes magazine and newspaper subscriptions on Home Screen

3.2 Displays the cover of the latest issue

3.3 Background downloads of new issues

4 Reminders for managing to do lists

4.1 Syncs with iCloud, iCal and Outlook

4.2 Location-based reminders when you leave or arrive at a location for iPhone 4S and iPhone 4

5 Built-in support for Twitter

5.1 Sign-in once in Settings and tweet directly from Camera, Photos, Maps, Safari and YouTube

5.2 Add location to any tweet

5.3 View twitter profile pictures and usernames in Contacts

6 Camera improvements for devices with cameras

6.1 Double click the home button when device is asleep to bring up a camera shortcut on iPhone 4S, iPhone 4, iPhone 3GS and iPod touch (4th generation)

6.2 Volume Up button to take a picture

6.3 Optional grid lines to line up shots

6.4 Pinch to zoom in the preview screen

6.5 Swipe to camera roll from preview screen

6.6 Tap and hold to lock focus and exposure, iPad 2 and iPod touch (4th generation) only support exposure lock

7 Photo improvements for devices with cameras

7.1 Crop and rotate

7.2 Red eye removal

7.3 One tap enhance

7.4 Organize photos into albums

8 Mail improvements

8.1 Format text using bold, italic, or underlined fonts

8.2 Indentation control

8.3 Drag to rearrange names in address fields

8.4 Flag messages

8.5 Mass mark messages as flagged, read or unread

8.6 Customize mail alert sounds

8.7 S/MIME

9 Calendar improvements

9.1 Year view on iPad and new Week view for iPhone and iPod touch

9.2 Tap to create an event

9.3 View and add event attachments

10 Game Center improvements

10.1 Use personal photos for your Game Center account

10.2 Compare your overall achievement scores with your friends

10.3 Find new Game Center friends with friend recommendations and friends of friends

10.4 Discover new games with custom game recommendations

11 AirPlay Mirroring for iPad 2 and iPhone 4S

12 Multitasking Gestures for iPad

12.1 Use four or five fingers to pinch to the Home Screen

12.2 Swipe up to reveal the multitasking bar

12.3 Swipe left or right to switch between apps

13 On-device setup, activation and configuration with Setup Assistant

14 Software updates available over the air without tethering

15 iCloud support

15.1 iTunes in the Cloud

15.2 Photo Stream

15.3 Documents in the Cloud

15.4 Apps and Books automatic download and purchase history

15.5 Backup

15.6 Contacts, Calendar, and Mail

15.7 Find My iPhone

16 Redesigned Music app for iPad

17 Hourly weather forecast

18 Real-time stock quotes

19 Wireless sync to iTunes

20 Keyboard improvements

20.1 Split keyboard for iPad

20.2 Improved autocorrection accuracy

20.3 Improved Chinese and Japanese input

20.4 New Emoji keyboard

20.5 Personal dictionary for autocorrection

20.6 Optionally create keyboard short cuts for frequently used words

21 Accessibility improvements

21.1 Option to light LED flash on incoming calls and alerts for iPhone 4S and iPhone 4

21.2 Custom vibration patterns for incoming calls on iPhone

21.3 New interface for using iOS with mobility-impairment input devices

21.4 Option to speak a selection of text

21.5 Custom element labeling for VoiceOver

22 Exchange ActiveSync improvements

22.1 Wirelessly sync tasks

22.2 Mark messages as flagged, read or unread

22.3 Improved offline support

22.4 Save a new contact from a GAL service

23 More than 1,500 new developer APIs

24 Bug fixes

Products compatible with this software update:• iPhone 4S• iPhone 4• iPhone 3GS• iPad 2• iPad• iPod touch (4th generation)• iPod touch (3rd generation)

* Normal carrier data rates may apply. Messages will be sent as SMS when iMessage is unavailable, carrier messaging fees apply.

For information on the security content of this update, please visit this website: http://support.apple.com/kb/HT1222