iPhone 6 and iPhone 6 Plus pre-orders began switching from "Processing Items" to "Preparing for Shipment" on the Apple Online Store for several customers on the Monday prior to Friday delivery, so customers that pre-ordered the Apple Watch early should see their order status change soon. Due to limited stock and the wide 4/24—5/8 delivery estimate for launch day pre-orders, however, there is a possibility that pre-order statuses may take longer to change.
Although the site's source assures them that bulk shipments have begun, we've yet to receive any shipment notifications from Apple. Have you noticed a change in your order status?
Let us know in the comments below!