We have started an effort to share the answers that we give in email conversations on a continuously expanding web page. The first and only topic at the moment are the requirements/expectations on the phase #1 project proposals.
Disclaimer: All answers reflect the opinion and experience of the program initiators. An independent board of reviewers will eventually decide on the selection of projects together with DFG representatives.
If you have questions on the SPP yourself, feel free to contact us.