The Nokia Lumia 1520 phablet running Windows Phone 8 may get a new edition, relaunching on AT&T with a green paint job and Windows Phone 8.1.

Nokia launched its Lumia 1520 flagship phablet back in November 2013, offering the device in four different color options: white, yellow, red, and black. The Lumia 1520 launched as an AT&T exclusive and came not only as the first phablet from Nokia, but also the first phablet to run Microsoft's Windows Phone operating system (OS).

The device was well-received and highly-regarded for its top-end specs and features, and it now seems that the Nokia Lumia 1520 is up for a slight revamp. According to well-known tipster @evleaks, who has an excellent track record when it comes to outing yet-to-be-announced plans in the tech world, the Nokia Lumia 1520 will relaunch on AT&T in a new green color option. The surprise doesn't end here, as the super-sized smartphone will allegedly rock the latest Windows Phone 8.1 OS, which is yet to make its official debut.

"Nokia Lumia 1520 will add a green color option when it relaunches on AT&T with Windows Phone 8.1," reads the tipster's brief tweet, but there's no accompanying image to show the purported green version of the device.

Microsoft is expected to officially introduce its new Windows Phone 8.1 OS at its annual BUILD conference. Evleaks offers no timeframe for when the Lumia 1520 will relaunch on AT&T, but there's a good chance that it may land on the carrier's network with the new color option and the latest OS on board a few weeks after Windows 8.1 becomes official.

As a reminder, the Nokia Lumia 1520 comes with a massive 6-inch display with a full HD resolution of 1920 x 1080 pixels and packs a quad-core Qualcomm Snapdragon 800 processor clocked at 2.2GHz, paired with Adreno 330 graphics and 2GB of RAM. The phablet has 16GB or 32GB of internal storage capacity, as well as a microSD card slot for additional memory of up to 64GB. Other specs include a 20-megapixel rear camera with Nokia's PureView technology, Carl Zeiss Optics, and optical image stabilization (OIS) among other features, and a 1.2-megapixel front-facing shooter.

While @evleaks has a good track record and this news definitely sounds exciting, it's worth pointing out that neither Nokia nor AT&T made any official announcement regarding this purported Lumia 1520 relaunch. Consequently, as always such cases, it is advisable to take this news with a grain of salt until official confirmation. We'll keep you up to date as soon as we hear more, so stay tuned.