If you're a module author/maintainer, you're probably equal parts excited and scared by the imminent need to upgrade your code to Drupal 8. A whole lot has changed, and it's hard to know where to start. If that's you, then check this sesh, yo.
I'll go over how to upgrade a module from Drupal 7 to Drupal 8, guided by the Drupal Module Upgrader, and I'll do a module upgrade BEFORE YOUR VERY EYES! You can follow along with your own module, or just sit back and watch the magic. By the end of this session, you'll be able to get your modules running happily on Drupal 8 and you'll know everything you need to refactor your code on top of D8's modern, object-oriented APIs.