Samsung has started rolling out the One UI 2.0 Second beta update to the Galaxy S10 series in the US. It comes with important fixes, new features and the November 2019 security patch. This update is already available in South Korea.
The software version of this update is G970USQU2ZSJF, G973USQU2ZSJF, and G975USQU2ZSJF for the Galaxy S10e, S10, and S10+ respectively. The size of this update is around approx. 600-650MB.
If you want to check for the update manually, you can do this by heading into the Settings > Software update > Download and install.
This screenshot (below) is from the Galaxy S10 smartphone running on the T-Mobile network in the US.