iOS 5.1 available for download

I just checked my iPhone and it seems that iOS 5.1 is available for download.

Whole raft of improvements are on offer:

• Japanese language Siri
• Photos can now be deleted from the Photo stream in iCloud
• Camera shortcut always visible in lock screen
• Camera face detection
• Better camera app for iPad
• Improved Mixes and Genius playlists
• Audio for TV shows louder and clearer
• Podcast controls for playback and 30 sec rewind
• Updated AT&T network indicator
• Addresses battery life bugs
• Fixes a bug that causes audio on outgoing calls to drop

You can download the update via iTunes of if you have iOS 5.0 installed OTA (Over The Air) by going Settings > General > Software Update.

I've installed it on my iPhone 4 and iPad with no problems at all. I'll get back to you with some first impressions later.