To the nay-sayers on speed as priority:

I'm currently on a two-week deployment cycle. It's not only annoying to wait but it's also dangerous. There have been several incidents where the code that broke something was committed a whole week or two weeks before! Worse still is that we're deploying two systems at once and usually we're patching the systems at the same time. So you have a perfect storm of bad things that can happen with multiple causes. Faster means you see the problems sooner.