PwnageTool 2.0.2: bad news and good news
Bad news is that it is still not avaliable. DevTeam postponed their release. The good news is that version 2.0.2 will jailbreak 2.0.1 fimware (and unlock 2.0.1 for old iPhone) and have both Cydia and Installer 4 included. Stay tuned, the release will be in couple days.