Are the "All new HTC One" - Renders fake or do they show different phones?

Htc-one-2014-grau-silber-vergleich-1024x472_medium

via static.androidnext.de

so i found this on androidnext.de and it actualy makes a lot of sense(haha) to me. The render of the black phone is different from the others. There is no outstanding Button on top, die Edges clearly ar less Round and the bezzzzzzlesl are thinner. (also, the Bottom Speaker is "dropped") There are 3 Solutions:

a) Silver and Golden show Prototypes, Black the final version

b) Silver and Golden show the new One mini, Black the new One

c) Either one is fake.

i like to think that b) is true. What do you think?