[adg]

I think this is probably an excellent example of what can be done with a comprehensive set of automatic regression and performance tests. I'm guessing most bugs are caught immediately after each build, and they can be fairly confident releasing stuff without doing much manual testing.

[pavs]

Also, I think there are quite a few people using beta and dev channel and chrome developers are continuously getting feedback on features being added on those channel.

I have been exclusively using dev channel for 6 months, never had a problem and it updates every week.