I thought about sharing with you some notes about my last week in San Francisco during WWDC (June 13 -17).
Different conferences happened at the same time during the week. I watched some sessions in WWDC and AltConf. There was also a conference for designers, called Layers. Apart from the conferences every night some kind of meetup / happy hour happened, see the full list here: https://2016.wwdcparties.com/parties/