Mann's research has been reproduced a number of times, the end result has been more or less the same each time.
EDIT: Mann's attorney states that the court made no decision either way since it was Ball who asked it to be terminated due to it dragging on and his health being poor. He didn't win a thing and neither was this a blow against Mann's 'Hockey Stick'.
Said statement:
https://pbs.twimg.com/media/EC1R41CW4AAt959.jpg