This is a pre-release version of iOS 4.2.1 for iPad, iPhone, and iPod touch.
But where is iOS 4.2 ? Later Today?

AT&T just announced that now you can manage your iPad account from any internet-connected device. This will allow you to manage your account and data plans by visiting www.att.com/ipad. You will use the same login credentials as on your iPad. You can also use www.att.com/ipad to setup and manage your data services for other iPads with wireless data capability that you purchase or own.

We’ve seen iPhone Apps results on Google Mobile Search before.
But now Google has just launched a new feature for the iOS devices that lets you use Google Search to quickly find native applications from the App Store.

Just go to google.com on your iOS device and click the “iPhone Apps” tab and search.

Grab It at limera1n.com or download here.

It’s two days later then originally planed, but worth the wait; if you’re running iOS 4.1, the GreenPois0n tool has been set loose for your jailbreaking pleasure. It’s a Windows-only release for now—something they’re hoping to correct “soon”—and supports iPad, iPhone 4, iPhone 3GS, and the third and fourth-gen iPod Touch. Upcoming releases should support second-gen Apple TV. Go ahead and set your device free here: Chronic Dev Via Gizmodo

Currently the Chronic Dev site is down, let them recover from the high demand and try again later.

Update: you can download the executable here: greenpois0n

If greenp0ison site is down you can grab it here: greenpois0n jailbreak executable