The latest i-model plug-in for Revit extends its capability up to Revit 2017, it is compatible with previous Revit versions (including 2016).
It is also available on the iWare site for Revit users who do not have access tot he fulfilment center: https://store.bentley.com/en/products/iware/1000IMPR--i-model-plug-in-for-Revit