I wonder if they're planning to also put wifi on the rpi zero, or if they just can't. From the pictures, it seems there is no visibly added component from rpi2

I wonder if they're planning to also put wifi on the rpi zero, or if they just can't. From the pictures, it seems there is no visibly added component from rpi2 to rpi3, so I guess wifi could be added on the rpi0 ? I mean wifi is really all I need, I don't need to plug so much USB peripherals or ethernet to such a computer, since everything can be done in SSH. We really live in wonderful times. I wonder if the RPi foundation will get enough momentum to even build some more advanced stuff like a cheap laptop. That's the only missing link to this awesome project. There already is a touchscreen, but I can't see solutions with a clean casing that can include a screen and a smallish keyboard.