Comex (iPhone DevTeam member), and the developer of the great JailbreakMe 2.0 Star which is the fastest and easiet way to do the jailbreak on iPhone iOS 4. He just sent a tweet with a download link to the JailbreakMe source code.
Source now available for anyone interested: http://github.com/comex/star
For anyone interest in the jailbreak me source code, can be downloaded from here.