This document discusses new features in SharePoint 2013 related to apps, development, and workflow. It introduces two types of apps: Apps for Office which integrate with Office apps and SharePoint apps. It covers development approaches for SharePoint apps including SharePoint-hosted apps, provider-hosted apps, and auto-provisioned Azure apps. The document also discusses the new workflow system which has been moved to Windows Azure Workflow for improved scalability and reliability compared to workflows running on-premises.