Apple has just released iOS 5.1 (build number 9B176).

iOS 5.1 is available for iPhone 4S, iPhone 4, iPhone 3GS, iPod Touch 4th generation, iPod Touch 3rd generation, the original iPad and iPad 2.

According to release notes iOS 5.1 includes the following the bug fixes and improvements:

Japanese language support for Siri (availability may be limited during initial rollout)

Photos can now be deleted from Photo Stream

Camera shortcut now always visible on Lock Screen for iPhone 4S, iPhone 4, iPhone 3GS and iPod touch (4th generation)

Camera face detection now highlights all detected faces

Redesigned Camera app for iPad

Genius Mixes and Genius playlists for iTunes Match subscribers

Audio for TV shows and movies on iPad optimized to sound louder and clearer

Podcast controls for playback speed and a 30 second rewind for iPad

Updated AT&T network indicator

Addresses bugs affecting battery life

Fixes an issue that occasionally caused audio to drop for outgoing calls

Please note that the iPhone Dev team has warned jailbreakers to avoid updating to iOS 5.1.

Update 1:

Here’re the direct download links for iOS 5.1:

Update 2:

It looks like Apple’s servers are struggling with the surge in traffic, a number of readers have reported issues downloading iOS 5.1. So it may be a good idea to try it after sometime.

As always, let us know how it goes. We’ll let you know if we find anything interesting the latest iOS software update so stay tuned at iPhone Hacks or join our Facebook Fan page or follow us on Twitter or add us on Google+ or subscribe to our RSS feed.

[via Mac Stories]