The public portal of the European Union to publish results of research projects, Cordis, has published a short newsletter of the PE2020 project, Results in Brief. You can find the briefing here in six European languages.
While the PE2020 project has officially ended, you can still find the project reports here. Especially, you may take a look at the PE2020 toolkit, which continues to live even after the projects duration! It tells you everything you need to know about public engagement!