This document discusses ASP.NET 5 (vNext) RC1. It notes that ASP.NET 5 is a rewrite of the platform that is now open source and cross-platform. MVC and WebAPI frameworks have been combined into a single MVC 6 framework in ASP.NET 5. The document outlines what is needed to follow the webcast, provides an overview of ASP.NET 5 and its roadmap, and discusses what will be covered in the webcast, including solutions, dependencies, tagging, and hosting environments.