https://wccftech.com/ps5-system-update-usb-storage/

The first major PS5 system update will be made available tomorrow, Sony has just announced.

Following minor firmware updates since the console’s release last November, Sony’s PS5 will be receiving a major firmware update tomorrow. This new system update will allow PS5 owners to store their PS5 games on external USB drives. Prior to this update, users could only store their PS4 titles on external drives. While the new system update allows for storage of PS5 titles, playing these titles is still only possible from the PS5’s internal SSD.