I think it will be sn0wbreeze because everyone has been saying it on YouTube and everything like that...
BEWARE: THERE IS CURRENTLY NO JAILBREAKS OUT... THEY ARE ALL FAKE!!
Answer by r0bErT4u · Sep 19, 2010 at 03:54 PM
"... It looks like Sn0wbreeze 2.0 will jailbreak iPhone 3G, iPod Touch 2G MC Model, iPhone 3GS with older bootrom and iPhone 3GS and iPod Touch 3rd generation with newer bootrom if it's still on iPhone 3.1.2. You can use F0recast to find out whether your iPhone 3GS has an older or newer bootrom ..."