The document discusses an agile publishing model developed by Sourcebooks, Inc. that aims to be more reader-centric, efficient, supportive of authors, and timely. It involves developing content based on reader needs through a community network of users and creators. The model emphasizes starting with the customer experience, gathering feedback, iteratively developing modularized content, and experimenting to build what readers want. It also aims to better support authors financially and with marketing/sales. An example project to develop and publish the book "Entering the Shift Age" using this agile model is described.