The Samsung Galaxy S7 will have a 5.2 inch screen, whereas the Galaxy S7 Edge have a higher dimensional screen, in the usual 5.5 inch lateral curvatures in the screen.
In the image are the Galaxy S7 and S7 edge next to the current Galaxy S6, the most interesting is the Galaxy S7 has exactly the same dimensions as S6, despite having a larger screen, this is accomplished by reducing the thickness the screen muldura, reducing it to a minimum. It is also curious that the S7 seems to have a slightly curved back cover, like the Galaxy Note 5 to better its ergonomics.
Regarding the dimension difference between the Galaxy and Galaxy S7 S7 edge of the image according to a difference of 2.5 mm width and en 8mm in height.
In what concerns to top views, it suggest that Samsung design is changing. The Galaxy S7 has larger curve on the back, while S7 edge has the curved on the screen.
Furthermore, this design is a bit more of the same without major innovations in terms of design, so surely this Galaxy S7 will have to convince with its specifications!