This update is currently rolling as 6th One UI 2.0 beta in South Korea, and 4th One UI 2.0 beta in India. You may get it with different beta version in your region.
The software version of this update is G970FXXU3ZSKJ, G973FXXU3ZSKJ, and G975FXXU3ZSKJ for the Galaxy S10e, S10, and S10+ respectively. It comes with a small size – less than 200MB.
If you are in One UI 2.0 beta program you can download it by heading into the Settings > Software update.