Peacock, 37, will hang up his boots at the end of 2015 after 17 trophy-laden years at Bradford and Leeds.
His last year will take in rugby league’s new era
He said: “There’s a real buzz about rugby league with the new structure in place, and I’m glad to be part of it for one more year.
“This is my last year, this pre-season has confirmed it for me! I’m looking forward to enjoying the season and making the most of what I’ve got left.”
The new structure means that Leeds won’t be able to win the Super League title from fifth again, as they did in 2011 and 2012.
After 23 rounds, the top eight break away and carry their points over to a final seven games, before the top four then go in to a straight shoot-out in the play-offs.
Peacock added: “All teams realise they have to get off to a good start. That’s been the emphasis behind pre-season, and whenever I speak to other teams it’s been the same.
“We know every point counts and we want to get in to that top four and challenge for the Grand Final again.
“Every game’s going to matter, every point’s going to matter, and we want to get as high up that league table as possible.”
As for the future, Peacock has still got designs in having an influence in the game.
“I see myself in a suit, whether that’s in the media or in the administration side of the game.”
Peacock’s Leeds get their season underway with a trip to Hull KR on Sunday.