From Sony (translated):
Notice regarding supply of lens FE 50mm F1.2 GM "SEL50F12GM" for digital single-lens camera a [E mount]
Thank you for your continued patronage of Sony products.
The lens FE 50mm F1.2 GM "SEL50F12GM" for the digital single-lens camera a [E-mount] released on April 23, 2021 (Friday) has received orders that greatly exceeded our expectations, and is a product. It may take some time before delivery.
We are currently making every effort to meet the needs of our customers, so please wait for a while.
When the preorders for this lens went live, I guessed that this model would be hard to get for a long time. Still, the best way to get the Sony FE 50mm f/1.2 GM Lens as soon as possible is to get in line now. Place an order with B&H and Adorama.