Where on the Marriott Rewards page can I sign up for the 'new' United/Marriott reciprocal elite perks? I cannot find this anywhere after spending about ten minutes on the Marriott Rewards page. Here is the news story from USA Today: Marriott and United to offer reciprocal elite perks
Brother Erc provided you the right link if your Elite with Marriott and want to take advantage of the extra perks with United. I was actually signed into both my Marriott and United account (couldn't remember my United acct number) when I signed up for the extra perks from United. Since I was signed into both accounts it automatically imported my United info over. After you sign up it takes about 7-10 days for United to update your status.