I last wrote about Blockstack early in 2016 when the team announced the goals of the project. Since then a lot of progress has been made. The team has released a browser which is now available for Mac, Windows and Linux. They have published several papers, including a couple in peer reviewed journals. The latest paper introduces the Blockstack token. In the meantime people have started to build applications using the BlockstackJS framework. If you are interested in writing an application you should check out the available bounties. 

Here is a new video in which Ryan and Muneeb explain the Blockstack project:

If you are interested based on this update, the Blockstack team has provided a lot of information about the upcoming Blockstack token sale.