Sorry I think it's the right move, Newbery needs freshening up and an update of their branding. Imagine if Mercedes-Benz had stuck with the same logo as they had in 1909 out of respect to Karl Benz. Companies have to move on to fit in with the times, I really like the new logo and think it sticks to the traditions of Newbery whilst just jazzing it up that little bit.
Newbery could have been continued to be run the way it was but I believe they needed the new owners to push the brand forward and keep it alive. Evolution with the brand will allow it to live on longer with John's legacy still paramount to the success.