Do perspectives workshops need to provide both a manifesto and a report?

Yes, we expect our Perspective Workshops to prepare a Dagstuhl Report and a Dagstuhl Manifesto.

The Dagstuhl Reports series aims at documenting a seminar/workshop; the report is not reviewed. See http://www.dagstuhl.de/dagrep.
(We expect the submission of the report 3 months after the workshop/seminar.)

A Dagstuhl Manifesto aims at describing the state of the art of the field and proposing visions and perspectives. The manifesto is reviewed by the scientific directorate of Dagstuhl. The manifesto targets both the scientific community and "political" stakeholders (such as funding agencies, EU departments, ...). See http://www.dagstuhl.de/dagman.
(We expect the submission of the manifesto ~6 months after the seminar.)