A new compressed LiDAR data format, .zlas is detailed in an update to Esri's ArcGIS documentation posted in late December. Esri apparently mentioned LiDAR compression at its Mapping and LiDAR Forum, co-located with the User Conference, last July. Esri's format is called .zlas.
- via G+
Image from LASzip: lossless compression of LiDAR data.