It'll probably be a while. We tried them before but they ended up becoming such a scandal that most people would demand cards without that feature if banks just started issuing them again en masse. Even now people buy the RFID shields for their non-RFID chip cards because of the bad reputation.
Not really. Only a few banks issue them now, and they tend not to by default (or well, at least AmEx doesn't anyway) because of what I mentioned above.
Most countries are actually going away from chip entirely, at least for smaller purchases. I went to the UK a few months ago and everyone assumed I was paying with contactless/Apple Pay. Which was nice because nearly everyone supported it.
Considering that and the upcoming EU mandate for contactless support at terminals, I'm not so sure PIN's necessary anymore, at least in Europe anyway.