No, really, you won't have to wait long. Which is kind of important, because without the 3.1 firmware, you can't indulge in some of iTunes 9's best treats—app organizing and genius playlists, to name a few. From the Dev Team:
Because of changes with Apple's update techniques this will be a multipart release, starting with the initial release of PwnageTool for Mac OS X - this application supports the iPhone 1st Generation (2G), The iPhone 3G and the iPod touch 1G. NB: THIS DOES NOT SUPPORT THE 3GS OR 2ND or 3RD GEN IPOD TOUCH. redsn0w for Mac OS X and Windows will follow sometime in the near future, please don't bug us about it - we'll release when we have something ready.
The rest of you can download Pwnage Tool right here, which should handily jailbreak and unlock any piece of hardware that hasn't been released in the last four months, and with a lot less hassle than with the hackish method discovered yesterday. [Dev Team—Thanks, tipsters!]