(15 May 2019) From Springer Nature – “we are now pleased to announce an updated policy encouraging preprint sharing for Springer Nature journals. This intends to remove ambiguity on two important points. First, we now make it clear that authors may choose any licence for preprints, including Creative Commons licences. Licensing choice will not impede consideration at a Springer Nature journal, but authors should bear in mind that it could affect sharing, adaptation and reuse of the preprint itself.
Second, the updated policy provides more information about our position on author engagement with the media in response to enquiries about preprints. “
More details can be found here.