iPhone Dev Team member musclenerd has been working on an iPhone 4 carrier unlock for quite some time and has now updated that the progress is steady, updating eager iPhone 4 users waiting for an carrier-unlock he tweeted :

Steady iPhone4 unlock progress with @planetbeing...custom "pp" command to dump thread priorities: http://is.gd/dirUZ

After getting success in jailbreaking iOS 4 there is another interesting development from iPhone Dev Team member musclenerd, few hours ago he tweeted confirming the upcoming final version of iOS 4 as unlockable even on the newer Baseband v 05.13.04, also pointing out

iPhone Dev Team has now officially confirmed and demonstrated that Comex userland jailbreak "Spirit" also works on Apple iPad 3G and might get released soon.

In less then 24 hours after release of the iPhone OS 4.0 Developer Preview, iPhone Dev Team member MuscleNerd has successfully jail-broken the operating-system and installed Veency VNC application on the iDevice.

MuscleNerd also posted a video showing the jailbroken iPhone OS 4.0 running Veency (A Cydia hosted app), you can checkout the video as posted ahead. There is no expected time-frame for a public release but things look very much on track and an proper iPhone OS 4.0 Jailbreak seems eminent in future.

As expected and blogged about few days ago userland jailbreak "Spirit" is now successfully ported to Apple iPad courtesy of iPhone Dev Team member MuscleNerd, within a day of sale the iPad OS 3.2 is been exploited allowing jail-breakers to get access to the root of the system, the hack which is a variation of "Spirit jailbreak" recently used to successfully exploit iPhone OS 3.1.3 is expected to use the same browser-based exploit allowing users to jailbreak their iDevices without any complicated process right from their mobile Safari web-browser.

In an video MuscleNerd demonstrated his very early work on porting the "Spirit" jailbreak to Apple iPad which allowed him to login into iPad as root, quite some works is still needed to have an full-functional, consumer-grade jailbreak from this point but it's now only a matter of time and effort as hackers have now access to the inner workings of the OS via this exploit.