We're not exactly sure what model this is specifically, even our overseas photographer couldn't clarify what model Skoda Roomster it was. All we can tell is that is has slightly more sporty bumper bars than the just-face-lifted model.
The prototype was caught testing in European alps, more specifically, doing brake tests up and down the mountain. Possibly testing the car when fully laden.
As well as the slightly different front bumper bar that shows a thin long grille unlike any other variant along the bottom fascia, the prototype also has different wheels which look like hub caps.
From the image above we can see that the car might indeed be carrying a heavy load in the back, evident by the drooped rear suspension. This could indicate testing of a new, more heavy-duty variant.
Whether it's just this prototype or not, it appears to be lacking roof rails too which are a standard feature on most Skoda Roomster models. This could indicate this being a sports version, or, a more aerodynamically focused eco variant.