Microsoft updated the slow ring of Windows 10. KB4531955 arrived to increase the version to 19025.1052, more precisely the 10.0.19025.1052 vb_release_svc_prod1 18.11. Previously it was 19025.1051. So you test the update function. Of course, it’s important too. The update KB 4531955 contains no major changes therefore, the update should not cause any further problems. They are trying out the servicing pipeline on 20H1 builds as they said. You can download the cab files from the links from the following part –
1] windows10-kb4531955-x64.cab
2] windows10-kb4531955-x86.cab
3] windows10-kb4531955-arm64.cab
Source – Windows experience blog.