Earlier this month, one of my favorite tech industry analysts, Benedict Evans (not to be confused with Ben Thompson, one of my other favorite analysts) wrote an insightful blog post summarizing the evolution of productivity in the information age.
He covers a lot of ground and it is well worth reading in its entirety.  He focuses on the future of Office and whether and how it will be replaced as the productivity tool of choice for most organizations.  Certainly the last five years have seen an explosion of cloud-based contenders (from Google Apps to Slack).  None have yet succeeded in replacing Office.
Benedict provides analysis and context of where we might be headed in a way I’ve never seen before.
http://ben-evans.com/benedictevans/2015/5/21/office-messaging-and-verbs