Just an update according to Youth Health http://www.youthhealthmag.com/articles/23338/20150916/pokemon-go-release-date-pokemon-z.htm

The release date may be November 20th 2016 as it may replace Pokemon Z

But according to News Everyday http://www.newseveryday.com/articles/26745/20150924/pok%C3%A9mon-go-release-date-fans-cant-wait-2016-gameplay-discussions.htm

It may come as early as Febuary 2016

Hey Everyone as we all know (How could you not if you are reading this on the Pokemon GO forum) This game will revolutionize the way we gamers interact! I'm a student here in Orlando Florida and have a group of friends here ready to get Pokemon GO and the Pokemon GO Plus for our adventure to Catch 'Em All!! Id love to get to know the community more so we can have a worldwide center for talking about the game. And even scheduling raids if you're in the area of other Trainers! Also to watch each others backs if you hear about where a rare/strong Pokemon may be we could all join in and catch it to benefit our teams! Lets also remember for this game no one is an enemy we are all just a bunch of nerds here to catch all the Pokemon in OUR WORLD. lets go trainers, And Catch! 'Em! All!