The new mode is part of Google's Digital Wellbeing tool on Android and created to help you remove some of the many distractions phones often provide so you can focus on what you need to get done. Google says you can end Focus Mode and it'll resume in line with your schedule the next day. These apps can be paused temporarily, which stops those apps' notifications. It allows you to select apps to pause, and when Focus Mode is activated, those apps will be greyed out in the launcher, and all notifications will be hidden. You can now schedule Focus Mode to turn on at certain days and times, so you can do not forget to stay off Instagram while at school or checking work emails on the weekend.
"For example, we've added an option to automatically turn Focus Mode on and off for the days and times that you choose (e.g. from 9AM to 5PM on weekdays)". The first new feature is the ability to create a schedule for the mode.
The Focus Mode feature is one of now many investments Google has made into its comprehensive Digital Wellbeing feature set, which was originally introduced at Google I/O 2018 but initially only on Pixel devices. Need access to those apps for whatever reason?
It has also developed digital wellbeing apps outside of its core Digital Wellbeing product, with October's launch of a handful of wellbeing experiments. After a few months of polishing everything up and adding some new features, Google's now rolling Focus mode out to everyone.