"In the future we'll continue to add free features to Trello (there is a lot of exciting stuff in the hopper)—anything that is a common feature, useful to anyone, will be free. We’ll also continue to develop new Business Class features that help large organizations manage Trello, and we may come up with other things to sell to people who are getting a lot of value out of Trello. "
They have effectively created two classes of users which they will support differently. Business is going to get features that the free plan will not. Deciding how they will split their time between the two users bases will be one of their biggest concerns going forward.
In the future we'll continue to add free features to Trello (there is a lot of exciting stuff in the hopper)—anything that is a common feature, useful to anyone, will be free. We’ll also continue to develop new Business Class features that help large organizations manage Trello, and we may come up with other things to sell to people who are getting a lot of value out of Trello. In the meantime, we sure appreciate the cookies!
Now, the really interesting question will be how much time do they spend adding free versus business features in the coming months? Does free start to get no new features? What makes a feature a business feature over a free feature?
EDIT - Removed my surprise about no backlash since I am geting negative points for it.