I believe so. I have a cinq sporting and I have had a new cambelt fitted today - thought it was about time cos the car has done 67,777, with no record of a previous cam change. 40,000 is the usual.
Sounds about right, I bought my Sei with 42k on the clock with no history of it having been done and it'll be one of the first things I do when I get the time to service it...
Better to do it and know when it was done than leave it to chance.