Try this link:
https://apps.exchange.autodesk.com/RVT/en/list/search?facet=__custom%3A%3A_subscriberOnlyApps%3A%3B__version%3A%3A2016

Although it doesn’t list 2016 version on the actual download page, after downloading and installing the Space Naming Utility, I discovered that it was actually added to Revit 2016:

As per screenshot above,  the 2016 version of Autodesk Site Designer Extension for Revit is also available.

Pure speculation here, but I expect that some of these other Subscriber addins will be delivered in the same way:

  • Batch Print for Autodesk Revit
  • Autodesk Revit Model Review
  • eTransmit for Autodesk Revit 2016
  • Autodesk Revit DB Link
  • Space Naming Utility
  • Worksharing Monitor for Autodesk Revit
  • Autodesk Vault Add-in For Revit
  • Autodesk BIM 360 Add-in for Autodesk Revit
  • Autodesk Revit Extension for Autodesk Fabrication
  • Advance Steel Revit Extension