Fresh off the press is OSRM 5.11.0.
The main new feature in this release is support for conditional turn restrictions that use ways as the via elements. Via-way turn restrictions also now work when there is a traffic-light node on the via way.
There were also a collection of guidance improvements, and several cleanups to the build system (the API docs are now buildable again, we don't crash GCC6, and various Visual Studio problems were corrected).