Vince McMahon: "As I approach 77 years old, I feel it’s time for me to retire as Chairman and CEO of WWE," McMahon said in a release. "Throughout the years, it’s been a privilege to help WWE bring you joy, inspire you, thrill you, surprise you, and always entertain you."
On the surface I am not sure what the difference is between "stepping down" which he did a few weeks ago, and "retiring." But this makes it officially official I guess.