The festival page at ArtsforArt.org:
http://www.artsforart.org/nyc-freejazz-summit.html Edit, April 8: New link. I just discovered that Arts for Art revamped its website about a week ago.
This fest, like the Arts for Art fest held in January 2016, strikes me as being comparable to Vision.
For the schedule, personnel, pricing/ticketing info., etc., please visit the festival page linked above.