from USA today article:
This season's racers are a more diverse lot: The show's 11 teams include Luke Adams, 23, a deaf college graduate from Monument, Colo., who travels with his mom, Margie, 51.
"We had to work a little harder because I can't hear," said Luke in a telephone interview interpreted by his mother, who noted that their choices were limited in some challenges. But "I'm a big fan and I've been watching since Season 1, and I really wanted to be the first deaf person on the show."
Also on the chase for the $1 million prize: a brother/sister team of Chinese-Americans with Harvard law degrees; a pair of former NFL cheerleaders; two flight attendants; diminutive stuntmen brothers; and Mike White, a screenwriter (School of Rock) and actor (Chuck & Buck) who travels with his gay activist dad, Mel.
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it's clearly speculated & rumored that cara/jamie, margie/luke, victor/tammy, michael/mark along with mel/mike to be the final 5 and they are the teams advertised on this article along with all those advertised screencaps for leg 1, makes me really think they might be really the final 5... in addition the flight attendants, christie & jodie are also mentioned on this article, so i hope they do consist of the final 6... hopefully this spec turns out true.. (crossing fingers)