I encourage you to read the new post of Michael Hugos called: The Three Laws of Agility

They mainly are:

  1. Agility is no longer just a good idea; it’s now backed by law, the law of probability
  2. The best way to be agile is to use simple solutions
  3. Doing the same things everybody else is doing is going to yield less and less benefit as time goes on

You have to read more on Michael’s blog but let me add something: I don’t think that post is about agility itself, is about doing effective business in flat /dynamic world.