I don’t think they were meant to be limited but with the COVID 19 situation with shipment and production pipelines being affected, the deluxe and regular versions sold out fast. I had the Deluxe preordered on Amazon since it was announced and got a nice deal on it but Amazon sent out a mass email saying shipments were delayed so I cancelled and ordered directly from Square Enix and got my copy before release day.
So I’d wait, keep an eye on GameStop and Best Buy’s websites for stock. Again the Deluxe wasn’t meant to be the limited edition, that would be the 1st Class Edition, so it’s likely a stocking issue.