Is there some sort of announcement from Springer about this? Specifically, one in which they state what the license is, e.g., CC-BY or CC-BY-SA or something like that? I'll bet they attached either the No-Derivs (ND) or Non-Commercial (NC) limitations, though -- would love to be wrong about that. In the PDFs I've looked at so far, they didn't bother to change the copyright statement at the front of the book, so they…
> SpringerOpen books are published under the Creative Commons Non-Commercial (CC BY-NC) license, so they can be reused and redistributed for non-commercial purposes as long as the original author is attributed.