InfraWorks 360 2016.4 has been released and is available for download.

New features include improvements to the Model Builder, raster terrain overlays, improved bookmarks, expanded roundabout functionality, ramps, left turn lanes, traffic simulation improvements, textures for individual bridge components, custom rainfall data tables and equations, ability to analyze off-road pipes and structures, improved web publishing, and proposal-specific panoramas.

For a video explaining the new features:

The newest release can be directly downloaded via this link.