Microsoft few weeks back announced that Windows Phone 7.8 will be released in January as they are testing the builds on various devices. Today Windows Phone 7.8 update for Nokia Lumia devices such as Nokia Lumia 800, Nokia Lumia 610 started appearing in Nokia update servers.

You can download them via Navifirm tool if you are so desperate for Windows Phone 7.8 update.

Thanks to everyone who sent this.