Three security issues are fixed in the latest Chrome, released by Google on October 9. The Chrome 70.0.3538.102 change log is relatively brief, and the announcement doesn’t highlight any of the changes.
For most users, Chrome will update itself on its own mysterious schedule. You can regain some control by clicking Chrome’s ‘hamburger’ menu button and navigating to
About Google Chrome. This will show the version you’re currently runing and — usually — offer an update if it’s out of date.