They don't have them anymore? Last I had seen, they were up to four? In fact another cat loving ZooChatter who occasionally PM's me recently tried to get in to see them and could not gain admittance to this private facility, but I was under the definite impression they are still there.
There is still, as far as I know, at least one in Thailand (the zoo name escapes me at the moment - it may even be earlier on this thread which I am too lazy to re-read). A few years ago I had seen a marbled cat held also at a very nice looking native wildlife park in India, but I think it is no longer there. I want to photograph a marbled cat about as badly as some ZooChatters want to see a thylacine. (And I fear may chances may be just about the same).
See, that sounds promising - I very deeply hope that I am wrong. My belief they no longer have them is predicated on the fact that in 2008 ISIS recorded one place in UAE as holding 1.1 marbled cats, and in 2011 this listing had been removed. If the collection you are referring to is non-ISIS, and received their animals from the ISIS collection - or alternatively the collection withdrew from ISIS - this could reconcile both accounts.
As I noted, I dearly hope there *are* marbled cats being bred, as I very much would love to see and photograph one myself.