Chrome for Desktop 80 was released on the 5th Feb.
Release schedules of Chrome browser
You can see the schedules below.
You can see the release notes of chrome browser. Remember you should find the title of "Stable Channel Update for Desktop" because the other product channel's one is also listed.
When it comes to the release note of Chrome 80, here is a url.
Acording to the page above, there are few text about functional changes instead of a number of security fixes.
For developer, here is a index page of reports about Chrome 80.
Then, this is a new in chrome 80.
This is a CSS/JS Platform API changes.
This is a report about the removed or deprecated things.
Pickup for webclass
Acording to the release notes, I think there are nothing special of changes to prepare for using webclass.