Samsung has announced that its bi-annual 'Unpacked' launch event will be taking place on Sunday, February 21 at 1 pm EST/10 am PST in Barcelona, Spain. While the invitations don't explicitly say that the company will be revealing its new flagship smartphone line, the Galaxy S7, the #TheNextGalaxy tagline in the teaser video (and the fact that the glowing edges of the cube form a 7) mean that it's almost certain we'll see the new devices.

The brief teaser video, which comes with the tagline "Get ready to rethink what a phone can do," suggests that the Korean company will put a focus on its Gear VR headset at the event. Whether this means the S7 range will bring improved functionality to the Galaxy-powered Gear VR, or if Samsung will reveal an entirely new headset (or both), we'll have to wait until the 21st to find out.

It's also been suggested that as the video shows a man leaning forward and reaching to grab a virtual object, Samsung may have found a way to bring positional tracking to the Gear VR, a feature currently absent from all phone-based VR headsets.

The Unpacked event is taking place at the start of the Mobile World Congress show in Barcelona, and the company is livestreaming the event on the Samsung Mobile YouTube channel.

According to a number of leaks and rumors surrounding the upcoming Galaxy S7 smartphones, Samsung has followed Apple's iPhone S lead by focusing on improving the hardware in its new flagship devices rather than their looks. As you can see below, barring more curvy edges and thinner bezels, the S7s looks identical to the S6s.

The new range is expected to include various Mini, Plus and Active versions of the Galaxy S7 and S7 Edge. Some models are thought to use Qualcomm's new Snapdragon 820 processor, which Samsung is manufacturing, and we're likely to see the return of the micro-SD card slot. Other upgrades may include dust and water resistance, a pressure sensitive screen for Apple 3D touch-style functions, USB-C, and a massive battery life.

There's no word on when the Galaxy S7 range will be available in the US, but rumors say it could be sometime in March.

Update: Another image leak showing a render of the back of the phones, courtesy of evleaks/ Evan Blass' Twitter:

Image credit: Evan Blass