After We showed you white iPhone 4 hands-on video, a Belgian user has just bought white iPhone 4, he just sent a screenshot showing that white iPhone 4 ruuning iOS 4.3.1. So, that seems good as white iPhone 4 owners will be able to jailbreak their devices.
Tags: jailbreak
You can jailbreak your white iPhone 4 by following this guide for Windows/Mac or this guide for Mac.