I also believe I read elsewhere this past week that it was still a few weeks away: which could now be as early as mid to late next week.
September 01, 2016
Tesla will have major software improvement to self driving car capability in next few weeks
Elon Musk tweeted - Major improvements to Autopilot coming with V8.0 and 8.1 software (std OTA update) primarily through advanced processing of radar signals
Tesla need to do one more minor rev on 8.0 and then will go to wide release in a few weeks
Next Big Future: Tesla will have major software improvement to self driving car capability in next few weeks