The Dev Team has released a new version of Redsn0w that is able to jailbreak iOS 5 Beta 6. Unfortunately it is an tethered jailbreak, which means you need to connect your iPhone to your PC everytime you want to turn on your iPhone. All download links can be found on the Official Dev Team blog, and iOS 5 Beta 6 is only available for Developers. Also there is not boot logo when you jailbreak your device.This jailbreak is available for:

• iPod touch 3G
• iPod touch 4G
• iPad 1
• iPhone3GS
• iPhone4 (GSM)
• iPhone4 (CDMA)

For more information check out the Dev Team blog.