Packt Publishing has published the latest edition of the Alfresco ECM Implementation book that now is available describing all the new features of Alfresco 4. I have contributed on this book as Technical Reviewer.
Below the slides of my talk at the Alfresco Meetup during the Codemotion about Apache ManifoldCF and the new Alfresco connector. Hope this helps :)
I have a slot during the Alfresco Meetup to talk about Apache ManifoldCF and the new connector that I'm developing with Maurizio Pillitu (Alfresco).