If the above images are accurate, then the new HTC M8 could have an a stainless steel/brushed metal outer case. Many of us here at HQ are drooling over the shiny new look. It might be a fingerprint magnet, yet it makes an impression when you first see it.
We don't know anything else which would indicate whether there will be more than one style/design of the phone. Previously leaks indicated this device retains the dual front facing stereo speakers that truly defined the HTC One, and these pics show this too. The second picture comes from a Russian website based upon their own "leaked" information. It closely resembles these pics, so it could be more evidence that the pics are real. Of course it could also simply be two lies supporting each other.
We will keep you updated as more details are revealed.