Apple begun seeding iOS 5.0.1 (9A402) firmware to developers that is compatible for iPhone, iPod Touch and iPad. iOS 5.0.1 includes security and bug fixes, especially related to battery life, voice recognition for Australian users and multitasking gestures on iPad.
iOS 5.0.1 update weights 811 MB and it will expire on Wednesday, 14 December 2011. If you are a registered Apple developer and want to download iOS 5.0.1 (9A402) then head to Developer Center and write your new findings of iOS 5.0.1 in comments.