Update: Thanks to @PDTechHD who has sent us this picture of the Samsung Galaxy S3 extended battery in its retail packaging!
If the 2100mAh battery that comes stock with the Samsung Galaxy S3 still isn't quite enough for you, you'll be pleased to hear that Samsung appears set to launch an extended battery pack for the device. The extended battery hits 3000mAh, and has appeared for pre-order at British retailer, MobileFun.
There are no images, or release date offered at this time, but the price for the battery is currently set at £39.99. Included is a replacement battery door -- in white or blue only it seems at the moment -- and the new battery will still come complete with NFC as with the standard one.
The new battery will no doubts increase the overall thickness of the device, but many will take that for such a large battery. It isn't overly priced either for an OEM accessory, but for now we'll have to watch and wait to see when they appear.