The Samsung Galaxy S6 upcoming new smartphone expected to be unveiled at MWC 2015 in March probably will be offered in several versions and not only two versions as we can see up to this moment when a new AnTuTu benchmark is leaked with the same model SM-G925F but now with a 16 Mpxls rear camera instead a 20 Mpxls and that is the only difference between them, as you can observe on the two pictures below the new benchmark in black and the before benchmark in colors.
Display: Quad HD Display 5.5 inch 2560 x 1440p.
Processor: Samsung Exynos 7420 with an ARM Mali-T760 GPU
ROM: 32GB (probably with an SD card slot)
Rear Camera: 20Mpxls and 16 Mpxls
Front Camera: 5 Mpxls.
OS: Android 5.0 Lollipop
The code name of the Galaxy S6 is Project Zero meaning a rebuilt from the scratch. We don`t know yet if this device will sport a full metal body.
The Samsung Galaxy S6 might come with a curved side screen as the Galaxy Note Edge as a variant of the totally flat version and probably both will be unveiled at the MWC 2015 in March as the Galaxy S5 was at MWC 2014.