Ruff's four-year contract expires at the end of this season, so he will not be offered an extension.
Here is the press release:
FRISCO, Texas - Dallas Stars General Manager Jim Nill announced today that Lindy Ruff will not return as head coach for the 2017-18 season and the organization will immediately begin the process of hiring a new head coach. Ruff earned a record of 34-37-11 for 79 points as head coach with Dallas this season.
"I want to personally thank Lindy for his commitment and professionalism over the four years that he served as our head coach in Dallas," said Nill.