Apple on Monday began notifying pre-order customers that it is preparing their Apple Watch orders for shipment. Multiple members of the iDB team saw the status of their Watch orders change from 'Processing Items' to 'Preparing for Shipment' this afternoon.
Apple also began charging customer credit cards for their orders on Monday, something that it typically doesn't do for new products until they are ready to be shipped. Combined, these signs bode well for Apple's ability to get Watches out to customers this week.