Interestingly, despite the 60th anniversary of the crash happening earlier this year, this thread remained untouched.
Harry Gregg remains alive and gave an interview to the BBC earlier this year saying at 85, the commemoration would be his last visit to Old Trafford. https://www.bbc.co.uk/sport/football/42953090
Bobby Charlton has been well discussed elsewhere, especially his outing to the recent funeral of England '66 team mate Ray Wilson.
Other survivors known about include Rosemary Cheverton, a stewardess on the plane. She is now married to Ronald Blakely and lives in North Carolina, USA. She gave an interview to The Mirror earlier this year. https://www.mirror.co.uk/sport/football/news/munich-disaster-air-stewardess-reveals-11891431
I can find nothing recent in the last couple of years regarding passengers Vera Lukic and her two children, or Eleanor Miklos who appear to be the only other survivors.