It is known that Agile has started 10+ years ago, with the Agile Manifesto; after this, a few well-defined methods rose up: XP, Scrum, Kanban, Scrumban.
But they were not enough, so another set popped-up and performed things in a good manner. The next wave is called Agile 2.0 and they are recognized to be lighter than the first set. It doesn't matter that they are Lean or BDD, they are the Second Generation of Agile.
We may call this "The Ultra-Light Revolution" or, simply Agile 2.0. Anyway, Lean is an important player in this revolution and this is a fact approved and recognized by more and more individuals and organizations.
For a few important points of view on these, please read this article.
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