Chrome for iPhone and iPad has been updated to Chrome 23 / 23.0.1271.91. This build brings in a number of new features and fixes to user-reported issues including:
Ability to open PDFs in other apps
Support for saving your boarding passes and tickets with Passbook
An option to automatically detect text encoding
Stability and security improvements
You can get the update via the App Store, or from the update prompt inside of Chrome. Known issues are available on the Chrome support site. If you find a new issue, please let us know by filing a bug.