Chrome OS Version 86 rollout out to stable channel over the next couple of weeks. 9to5Google 
This release has several updates for user accessibility.
You should soon see an update on your device for Chrome OS 86! Here’s a list of new features and changes you’ll notice when you update to this new version of Chrome. Google
One of the new features that I will use is the autologin feature after entering my PIN when accessing from screen lock. This is most useful on the Lenovo Duet
I installed this upgrade on the Lenovo Duet on October 14, 2020.
I installed this upgrade on the Google Pixelbook on October 24, 2020. I observed a notification to upgrade the Crostini container to Debian 10 (Buster), which I attempted but the upgrade failed and reverted to Debian 9. It now looks like move to Debian 10 I will need to remove and re-create the Crostini container.
On October 26, 2020 I read that Google had pulled the Chrome OS 86 upgrade for some unspecified reason. Before I give up on upgrading the Crostini container I will wait for the next release of this OS and try again. AboutChromebooks
On October 20, 2020 I read that Google re-released Chrome OS 86 and an update was installed on the Google Pixelbook. I ran another upgrade of the Crostini container but it failed like the last time.