Jumped on XT M8000 being in stock and I get a shipping notice for a chain.
Sometimes they ship the order in parts, depending on availability. But usually they let you know if that's the case. Otherwise email them and ask what is going on, especially if you are going to wait forever for the rest of the kit. Tell them you wanted the whole thing ASAP and if it has been turned into a preorder, tell them to cancel it if you don't want to wait. They are usually pretty good about returns.