If there is no mute switch, get over it. This is the direction we're heading in. Apple's main target is create a phone with no bezels (or make them as small as possible) and with no buttons on it at all. It'll only get worse for you kind of people. Seriously, get over it. You'll buy it anyway once you see the promotion pictures on Apple's website.
I can see no basis for your "Apple's main target is create a phone with no bezels (or make them as small as possible)" statement - Apple is way behind all their main rivals in that regard and this design makes no change to that, it's just removing the headphone jack and mute switch for...? "Thinness"?? Even if this is an intermediate step - why should customers buy it, removing things for where the next generation of phone is headed, but with last generation tech and form factor? If I buy it it'll only be because my iPhone 6 is getting old and the battery dying.