Steve, the guy who was behind PushFix 2.0 (the first real fix for Push Notifications) for unlocked iPhones and Blacksn0w RC2 fix for iPhone 3.1.3 has just released Blacksn0w RC2 for iOS 4. This version of blacksn0w is basically a repackaged version of the original unlock released by geohot, and the binaries which were recently released by MSFT Guy for 05.11.07 baseband on iPhone 3GS, running iOS 4.0 GM (formerly iPhone OS 4).
ToolJail has been just updated to version 1.3.2. This new version is only a minor upgrade, with updates to guides, and links to new versions of jailbreaking tools like Sn0wbreeze. For those of you who don't know, ToolJail (like f0recast) is designed to help iPhone newbie’s to jailbreak and unlock their iPhone and iPod touch. It contains all the necessary jailbreak and unlock instructions, along with how-to’s on DFU and Recovery Mode, downgrading firmware, and direct download links for all the necessary tools required.