Google has promoted Chrome 68 to a stable channel for Windows, Mac, and Linux. The latest version, Chrome 68.0.3440.75, includes many fixes and improvements, details of which can been found in the changelog. Major changes of note include all HTTP pages being labeled "Not secure" and 42 security fixes.
To prevent sites from showing a "Not secure" warning in Chrome 68, Google suggests sites migrate to HTTPS. Google originally announced its intention to provide the warning for HTTP sites earlier this year. For those who need assistance moving from HTTP to HTTPS, Google has published a migration guide.
The 42 bugs for which fixes were issued came from both Googlers and external researchers. Google gives special recognition in its blog post announcement to external researchers who reported bugs. If you are interested in reporting a bug, check out the bug report site.
For information relevant to enterprises, check out the Enterprise Release Notes for Chrome 68. Google encourages developers to visit and participate in the community help forum to discuss issues. Google will be pushing out new features for Chrome 68 soon.