Purdue is making a slight change to their Boilermaker logo on team apparel for future products, at the request of Nike.
Associate athletic director Tom Schott explained the change saying that it was a decision driven by their apparel provider, Nike. "Nike had come to us a while back with some suggestions. Nike said the train logo we used was not good on apparel. The smoke didn't work on shirts and hats. They recommended this slight revision."
As you can see below, no drastic changes. Just a minor change in the view and some other slight revisions.
Old logo on the left, new logo on the right.