The news is that it’s on active development at the moment, especially in the frame of the Rasputin research project (start [ANR-RASPUTIN]).
The current work focuses on bridging beam tracing (used for early reflections) and FDN engine (for late reverb), and simulating source directivity. Part of this work is already in the spat5 package (spat5.evert, spat5.evert~, etc.) although it is not documented, and i cannot offer any support at the moment, as the prototypes evolve constantly.
Stable/public release is not expected before the end of the Rasputin research project, so in 1 or 2 years. Be patient!