Looks like the iphone 4 class device tethered jailbreak will be due out soon via a port of redsn0w. I know that opensn0w is out somewhere also, but the steps for that are very complicated. Also, none of the tweak developers have had a jailbreak to use for development yet, so likely almost everything installed from cydia on ios7 will be broken for the first few weeks.
BigBoss Authors: Mark Bruce & Kory LeeTags: ios7