The document discusses the new Design Manager tool in SharePoint 2013. It introduces the Design Manager as replacing the Design view in SharePoint Designer for building custom master pages. Key features covered include converting HTML designs to master pages, using device channels to target different devices, creating display templates to customize search results, and packaging designs for deployment using design packages. The session aims to help attendees understand how to build custom branding in SharePoint 2013 using the new Design Manager tool.