From Sony Japan (translated):
Notice regarding supply of full-size mirrorless interchangeable-lens camera "a7 IV" (ILCE-7M4)
Thank you for your continued patronage of Sony products.
We have received orders for the digital single-lens camera "a7 IV" (ILCE-7M4), which we started accepting orders from December 7, 2021, far exceeding our expectations, and it will take time to deliver the product.
We are currently making every effort to meet the needs of our customers, so please wait for a while.
Order the Sony a7R IV from
B&H, Adorama, and
Amazon.