The NHL and NHLPA announced a $71.4 million salary cap ceiling and a $52.8 million salary cap floor for 2015-16. The New Jersey Devils are under the floor now, but that should be easy to reach - leaving them with a lot of space for the coming season.
Earlier today, the NHL and NHLPA announced what the salary cap and floor will be for the 2015-16 season. Here's the NHL's report that mentions it, and here's the NHLPA's release - both links are from their respective websites. The salary cap will be set at $71.