One of the most interesting of the WWDC 2018 videos was the Embracing Algorithms session which introduced a couple of interesting new ways to approach common problems using some of the additions provided in Swift.
Introducing AGI Studio for Mac, a port from the Linux project QT AGI Studio, a toolset which allows one to create and modify Sierra AGI games.
Over the past several years, virtual reality (VR) has finally been making some solid inroads towards being a viable commercial technology.
2018 was a continuation of wrapping up the big projects which were being worked on in 2017.