Status of point cloud (lidar) support?

I'm interested in the ability to display >1M points, with the point data being streamed from a source supporting LOD/pyramid/resolution-based queries.

There have been a few mentions here of forthcoming support for point clouds, with some suggestions that one could use the point-geom branch on GitHub in the meantime. What's the current status of point cloud support? Is that branch still good for use, or is there something better already/soon?

I'm trying to get a feel for how far along Cesium is towards supporting lidar workflows; I've got the bandwidth to help out on the implementation, if it looks likely...