I've been following the Grand Prix since the very first season it was in place (1995-1996), and I cannot remember another year where there have been so many withdrawals/splits as there have been with the pairs (and even ladies) in 2012. The ISU is to the point now where there are no other pair teams within the World Standings/Seasons Best or minimum score who are even eligible to skate on the Grand Prix!
Let's look at all of the changes since the initial rosters were published in May:
USA TBD ---> Castelli/Shnapir USA
CAN TBD ---> Popova/Massot FRA
Cup of China
RUS TBD ---> Martyusheva/Rogonov RUS
Trophee Eric Bompard
FRA TBD ---> James/Cipres FRA