The Chronic Dev-Team has a released a tool to collect crash reports from iOS devices in order to find vulnerabilities that could lead to an untethered jailbreak.
Saurik has released an update to Cydia that fixes the 'Restore from Backup' issue which required you to reinstall Cydia Installer after restoring from an iTunes backup.
JailbreakMe.com is now showing a 'We'll be back soon.' sticky note suggesting that the site may be undergoing updates before the release of the iPad 2 jailbreak.
The P0sixspwn jailbreak tool has been updated with support for iOS 6.1.6 for the 3GS and iPod Touch 4th generation. It also brings crash fixes when using iTunes 11.1 or higher
These are instructions on how to jailbreak your iPod Touch 3G and iPod Touch 4G using Limera1n for Mac. Limera1n supports iOS 4.0, 4.0.1, 4.0.2, and 4.1.