While I was on a job site yesterday Autodesk released Revit 2017.1. In the past they've called this release R2. I think 2017.1 is better.
Finally the Space Naming Utility is just Space Naming and built-in. I've been complaining about the illogical segregation of this crucial collaboration tool for a long time. So many engineers I've met didn't even know the tool existed and that's silly. When they get to use 2017.1 it will just be waiting for them on the ribbon, no extra installation for EyeTee or Revit Managers to remember to deploy. Yay!!
As for what features are included with 2017.1 you can check out the Inside the Factory blog post. As usual Luke has shared some very useful links on his What Revit Wants blog.