Apple iOS 4.3.1 is now out

Apple has realeased an update to their iOS mobile platform.
Apple iOS 4.3.1 is now being delivered to users of iOS based devices through iTunes.
Changelog:
- Fixes an occasional graphics glitch on iPod touch (4th generation)
– Resolves bugs related to activating and connecting to some cellular networks
– Fixes image flicker when using Apple Digital AV Adapter with some TVs
– Resolves an issue authenticating with some enterprise web services
It is only available for following models:
Apple iPhone 3GS
Apple iPhone 4 (GSM Model)
Apple iPad
Apple iPad 2
Apple iPod Touch 3th and 4th generation