An European variant SM-G925F is showing the below screen shot of AnTuTu benchmark application
with the following specifications of the Samsung Galaxy S6:
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.
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.
Source:cnmo China via PhoneArena