Google emphasizes the inclusion of sandboxing for devices with Android 4.1, which stops malicious websites from accessing the rest of the browser, or your device. Android 4.0+ users will also get a series of bug fixes and improvements in IME support, meaning third-party keyboard performance will be improved while using the browser (very welcomed). But the most noticeable inclusion is probably the ability to better use YouTube controls when in full-screen mode.
You can go ahead and update Chrome for Android now, or simply go download it straight from the Google Play Store if you haven’t yet. Enjoy and hit the comments to tell us how the update feels!