According to Shane Carwin on twitter:
"I expect to be on the January 1st card. I do not have an opponent yet. Any takers? @UFC. I do not care who the opponent is."
"I have been in the gym working hard. It is time to see where I belong in the mix."
"If I knock my opponent out on 1-1-11 in the 1st round at the 1:11 mark I will give the gloves to a follower on Twitter."
[UPDATE] - UFC eyeing Shane Carwin vs. Roy Nelson according to MMA Fighting:
Sources close to the fight, have confirmed that the organization is looking to match up contenders Shane Carwin and Roy Nelson at UFC 125 on New Year's Day.