Spigen is an accessory company, which usually has some of the first iPhone cases for the latest devices on the market. Case manufacturers usually try to get ahead of the competition by creating cases based on rumors or supply chain chatter.
These new renderings show a design similar to the aforementioned iPhone 5S body. According to the renderings, Apple is planning on keeping the old round volume buttons and dual flash on the rear camera.
Like the iPhone 6S and 6S Plus designs, rumors call for a tapered display, although it is difficult to tell from these renderings. The iPhone SE is rumored to have the guts of an iPhone 6, but the main difference would be the smaller size and display.
We'll have to see what Apple decides to go with later in the month.
Source: MacRumors