For anyone who decided to give up their jailbroken version of iOS in order to upgrade to the iOS 5 beta, you're about to get the best of both worlds again. Using Redsn0w 0.9.8b1 on the Mac, you can perform a tethered jailbreak that let's you bring Cydia and all the jailbreak apps into the iOS 5 fold. Of course, being a tethered solution, this means you'll need to plug in your device if you need it to be rebooted, which means we're personally gonna wait until the untethered option is available.