It seems like Samsung's Galaxy S5 and Galaxy Note 4 are already a thing of the past, as the South Korean company is reportedly working on a new flagship phone codenamed "Project Zero," which is rumored to be the upcoming Galaxy S6. 

One of the first rumors that came out about the alleged Galaxy S6 claimed that the product will be launched during the 2015 World Mobile Congress that will be held in Barcelona, Spain in March. 

Also, some speculations mentioned that the future flagship smartphone of the South Korean consumer and tech giant could feature a "dual-edged" display. If so, then it would be somewhat similar to the soon-to-be-released Samsung Galaxy Note Edge that has a screen that curves down the right edge of the phone. With the Galaxy S6, both sides could have screens right down the edges. 

Jerry Kang, the senior analyst of IHD Technology consultancy firm, said, "The dual edge is expected to be beneficial for Samsung Display, the main display supplier for the smartphone-maker, as larger displays bring more profit." 

The possible specs of the alleged Galaxy S6 have also made the rounds online, saying that it will have a Super AMOLED screen, possibly bigger than the current size of the Galaxy S5. It will likely run the latest Android 5.0 Lollipop, use the newest version of Samsung's TouchWiz interface, as well as have one of the latest Qualcomm's 64-bit processors that's expected to be launched in the first half of 2015. 

There is no word yet about the camera that the Galaxy S6 will feature, but the company might equip it with either a 16-megapixel resolution that the current Samsung flagship phones already feature, or one with a higher resolution. Also, there's a big possibility that the S6 will be offered in 16 GB, 32 GB, and 128 GB varieties.   

If the upcoming smartphone would have the above impressive features, then most U.S. networks will likely offer the device once it is released.