All Galaxy S7 Spigen cases can currently be seen on Amazon, and you can even order them, for prices starting at $14.99, though they won't start shipping before April 1.
We heard more than once that the Galaxy S7 and S7 Edge won't be too different, deign wise, from the Galaxy S6 and Galaxy S6 edge. The images that Spigen posted on Amazon don't contradict this, though they seem to be including Galaxy S6 renders, rather than S7 renders.
As a reminder, the Galaxy S7 is expected to sport a 5.1-inch Quad HD display, while the Galaxy S7 Edge should come with a 5.5-inch Quad HD screen. The Galaxy S7 Plus and Galaxy S7 Edge Plus may have 5.7-inch and 6-inch displays, respectively. Water-resistance, bigger batteries, and microSD card support should be among the common features of all S7 handsets.
It's not the first time when Spigen shows off cases for unannounced Samsung devices. Last year, the accessory maker unveiled cases for the Galaxy S6 and Galaxy Note 5 before Samsung officially presented them, showing phones that resembled the final products.
Spigen cases for the Samsung Galaxy S7 series
source: Amazon via 9to5Google, Phone Probe, @evleaks