In an article posted to it’s KnowledgeBase, Apple announced: “The versions of Final Cut Studio and Final Cut Express listed below are compatible with Mac OS X v10.6 Snow Leopard.”
It is interesting to me that both recent versions of Final Cut Studio were certified.
Keep in mind that while Final Cut Studio may be certified, many third-party applications that run inside Final Cut Studio are still being updated for Snow Leopard.
I would still urge a “wait-a-bit” approach.