Microsoft is giving Windows 10 19H2 access to more Insiders in the Release Preview ring. Yesterday, the company announced that all "seekers" in the Release Preview ring can now download the 19H2 Build 18363.329, which was previously released to a subset of Insiders of Release Preview Insiders last week.
If this 19H2 version is now available to all Insiders in the Release Preview Ring who are looking for updates, Microsoft will also automatically send it to 10% of the Insiders in that Ring. You can read the full explanation of the Windows Insider team below:
We have increased the "search engine" experience for 19H2 in the 100% launch preview ring. This means that everyone in the Release Preview ring should see an update of Windows 10, version 1909 available if they go to Settings> Update and Security> Windows Update. Initiates who choose to install this update will be updated to 19H2 Build 18363.329. We are also starting to send 19H2 to 10% of Windows Insiders in the Release Preview ring. This means that 10% of Insiders in the preliminary version of the version should see the version 19H2 Build 18363.329 offered automatically.
To be clear, this version 18363.329 that is now available in the Release Preview ring is different from the 19H2 build 18362.10019 version that Microsoft released for Slow Ring Insiders yesterday. The latter includes all new features included that have been tested before the release of the 19H2 update later this fall, including the ability to allow third-party digital assistants to be activated by voice over the lock screen, or to quickly create an event directly from the Calendar drop-down menu in the taskbar.
The Slow Ring and Release Preview Insiders are not exactly on the same page at the moment, but Microsoft is not done with the 19H2 update yet and the build numbers should continue to change in the near future.
Additional reading: 19H2, build 18363.329, Release Preview Ring, Windows 10, Windows Insider