Google reorganized into a holding company called Alphabet. Most of their new product development efforts were spun out into Alphabet subsidiaries to take them off of Google's books.
Google's self-driving car efforts were spun out into a company called Waymo. Somewhere in the move they lost most of their best people to various other startups, including Otto/Uber, Cruise, Apple, Thrun's two (?) efforts, even some conventional car companies. The story is that Google/Waymo's autonomous car experts used their Google compensation to bootstrap a bunch of new startups. Either way, Google/Waymo has lost a lot of big names, they're burning bridges, and analysts think their technology is now lagging far behind their competitors.
Google's AI efforts are actually Deepmind AI efforts are actually deep learning efforts. Deepmind was a relatively recent acquisition, and wasn't fully integrated into Google before being spun off again, so it's a stretch to call them Google. It's best not to think of this stuff as AI, but more like building a really big statistical model that's too complicated to understand. They're doing interesting work, and Deepmind is well connected to the best researchers in the area, but they aren't much ahead of their competition. Facebook has been using similar technology for translation and facial recognition for a while.
Those are the only ones worth discussing.
Google Proper has been doing a few small things here and there, for sure. They've tried to reinvent e-mail via terrible UX. They've also reinvented RSS in a way that makes it really easy for Google to steal your content, but is broadly worse for everybody else. I guess they've made a bunch of Vive apps. Plus I'm sure they've been updating and maintaining their core product(s) although I'm not sure how you'd be able to tell.
Google lost a LOT of good early hires to Facebook when it ascended. Like, for example, Paul Buchheit, who made Gmail, one of Google's most important products. Facebook wasn't just the new hotness, but Google was grossly underpaying engineers back then. IMO they never recovered from it and IMO they never will. Between that, and the holding company restructuring, I don't think you should expect great things anymore.