Nokia has announced on its official Conversations blog that the long-promised roll out of WindowsPhone 7.5 Tango OS updates for its Nokia Lumia 710 and 800 handsets has begun, bringing with it improved camera features and apps, as well as finally adding sought after features such as tethering support.

The mobile OS update will bring Wi-Fi tethering with support for up to five devices all using the phone's internet connection at once. Also announced is a new flip to silence feature, which as the name suggests will silence incoming calls and alerts if you place the device on its face.

Several new features have been included for the camera as well, such as a self-timer and panorama mode, as well as Group Shot, which takes five photots and then determines the best faces from the selection taken. Action Shots serves as the handsets new "burst mode" and enables the phone's user to select the best picture from a handful taken.

Play To functionality will enable those with the device to stream video, music and pictures to other DNLA compatible devices, although Nokia pointed out this app was already available for Lumia users. Contact Share will also let you send and receive digital business cards using SMS.

The update will begin rolling out across both devices worldwide between now and the end of July, with access granted to the new apps once the upgrade is complete. Handset owners will be required to connect to a computer with Zune installed in order to download and install the update.