No one is going to be able to provide any really relevant predictions as to when you might get your flywheel, but if you actually ordered it from Ford Performance Inc. (previously Ford Racing, Ford Motorsport, etc. who's parent company is Ford Motor Co.) and they indicated that they had the inventory, then generally you can count on: "it's in the mail". But you might have paid more than you had to if you bought direct, as for example we sell (as do many) for far less than the List Price.
But perhaps you ordered from Ford Racing Parts "Direct", who is not F-O-R-D, but rather just wants to look like it, well there's no telling.
I'm guessing you didn't order a flywheel for an FE? as the latter doesn't even list the Ford Performance M-6375-N427 wheel on their web-site?
But it is available "In-Stock" with Ford Performance, Inc., as with us anyway.
Scott.