Carter doesn't elaborate however on his post.
Has McCaw joined Twitter, Instagram, Facebook or did he finally download Candy Crush?
However, with speculation rife over McCaw's post-World Cup plans and All Blacks fans not wanting to accept that he may actually retire, any news about his activities takes - no matter how slight- takes on new meaning.
After the final, Mccaw was asked if he was retiring. He remained coy on the subject though.
"I still don't want it to end, to be honest. I'm still part of this team. I'm going to enjoy today. How could you get enough of this? I'll worry about that after today. I'm just going to enjoy having played the World Cup final with a wonderful bunch of men. I'm so proud of wearing this jersey again today. I don't think you can have enough of it. Why would you ever call it a day?"