Rumors were abound last night that T-Mobile would begin sending out the Android v1.6 update (known amongst the geekdom as “Donut”) today, and sure enough: they’ve just confirmed it.

The big changes here include a fix for a bug that would reset your phone after dialing 911 (Oops!), the new (and much prettier) market, improved voice search, a new camera interface, and homescreen search. Here’s the official word from ol’ Magenta themselves:

The rollout of Android 1.6 (Donut) to T-Mobile’s G1 and myTouch 3G customers is now underway, and provides new features and software enhancements. The update also includes an important fix for isolated instances of system reboots after dialing 911. We have worked with Google and HTC on a solution, and the rollout of Android 1.6 is being accelerated to ensure the system reboot fix is rapidly delivered to our customers.

The over-the-air update will be delivered to all G1 and myTouch customers in the coming days. Given the system reboot fix, we strongly encourage all users to install Android 1.6 when prompted to do so.

Regarding new and enhanced features, Android 1.6 includes:

* An improved Android Market experience that makes it easier to discover great applications.
* An integrated camera, camcorder, and gallery interface.
* Updated Voice Search, with faster response and deeper integration with native applications, including the ability to dial contacts.
* Updated search experience that make it easier to search various sources, such as browser bookmarks & history, contacts, and the web, directly from the home screen.

Additional details on Android 1.6 can be found at http://developer.android.com/sdk/android-1.6-highlights.html

If last night’s rumors continue to hold true, G1 owners should begin getting their updates today, and myTouch owners should start seeing it tomorrow. Let us know when you get yours!