According to News is, Samsung is working on Galaxy S7 and the new device may launch in the mid of New Year.
S7 may have curved edge as seen on Galaxy Note and Galaxy S6 edge by Samsung.
Regarding Processor Samsung may use its Qualcomm Snapdragon range on the other hand there might be possibility of Exynos chip as well.
According to Rumors, Galaxy S7 may have 6GB of RAM ansd may have memory card slot which is missing in galaxy s6. Let’s wait and see what GalaxyS7 holds.