Today, the change has landed in Chromium and will no doubt be pushed to Canary shortly. Now called about:flags, the page sports the trefoil (internationally recognized as a warning against radiation) and a bigger, scarier warning. "Please proceed with caution," the intro concludes.
In addition to the name change and new cautionary text, a command line switch has been added to allow users to launch Chrome with all previously-enabled experimental features disabled: --no-experiments. Should you happen to encounter problems browsing after enabling a feature or two, simply add the switch to your launch command and you're back to the stock set of Chrome features.