The NIRC2 L-Band Vortex Coronagraph will be available for science in shared risk mode in 2016B. WMKO is working on official documentation for the new instrument capability (hopefully out by the end of the week), but given that the NASA proposal deadline is one week away on March 17, you may use the information in the September 2015 presentation given by Dimitri Mawet at Caltech.  Dimitri is the primary point of contact and users are encouraged to contact him prior to proposing. Once more documentation is available, it will be linked on the WMKO instruments page.

Complete proposal call information can be found here: http://nexsci.caltech.edu/missions/KeckSolicitation/