Since the delivery of the new OS 3.1, many people have been emailing me or asking me on Twitter if it is possible to jailbreak iPhone 3.1. The disappointing answer is that, no, there is no jailbreak yet for firmware 3.1 but I am confident the Dev Team is working overtime to deliver to us a jailbreak (and maybe an unlock) for 3.1.
As I mentioned earlier this week, if you are running 3.0.1 or 3.0 and that you want to keep your jailbreak and/or unlock, do not update to 3.1. It will wipe out everything and may make it impossible for you to jailbreak or unlock again in the future.
I will update the blog as soon as I have more information. For the latest news on jailbreaking and unlocking, please refer to the jailbreak page and the unlock page on the site. These pages are up to date with the latest jailbreak and unlock guides and tutorials.
For real-time info, you may want to follow me on Twitter.