The global chip shortage doesn't appear to be letting up any time soon. It's looking more and more like these issues may run well into 2022, if not longer.
Canon has issued an official statement saying that new orders for the Canon EOS R3 may take up to 6 months to deliver.
From Canon Japan
Currently, we have received orders for each of the following products in excess of expectations, and due to the impact of global parts supply, delivery delays are occurring. We apologize for the inconvenience caused to our customers and business partners.
The products are scheduled to be shipped one by one, but it is expected that it will take a lot of time for the new camera body EOS R3 and RF lens RF14-35mm F4 L IS USM.
It will be shipped in sequence, but it may take more than half a year to deliver when you place a new order.
We plan to ship the products one by one, but it may take longer than usual to deliver.