Valve announced on Twitter that the production for the Steam Deck has picked up and will be shipping double the quantity of the handheld device.
This hints that the company has doubled production and should help reduce the waiting time for new customers.

Additionally, Valve announced that it will start sending Q3 reservation emails starting June 30. If you’re among those that ordered the Steam Deck and receive the email, you only have 72 hours to complete the order process and pay for the device. If you don’t do so within the timeframe, your reservation will be lost.