So, first of all, Routines (aka chained together actions with a custom phrase) can now be triggered from an alarm-dismissal.
Imagine - your alarm goes off in the morning, and dismissing it automatically turns on your lights, starts your morning wake-up playlist, and turns on your coffee machine Or any number of combinations of your smart devices
Secondly, Broadcasts (a feature I use all the time, you talk into one Google Home / Assistant device and it broadcasts your voice message to the other devices) can now be used outside of the house. This is really cool, so when I’m out shopping or something, I can send a quick broadcast message to my partner to ask what we need.
They’ve added playback speed to podcasts / audio shows too, and the ability to silence all the mobile phones in your house connected to Google Assistant on your account by saying “Hey Google, silence the phones” - super handy if you’re watching a movie or something