Microsoft have released the 2nd Windows 10H2 build for Windows Insiders. Build 18362.10005 is available for Windows Insiders on the slow ring and includes to the fixes and updates included in KB4507453 for the May 2019 Update, as well as the following changes:
Windows containers require matched host and container version. This restricts customers and limits Windows containers from supporting mixed-version container pod scenarios This update includes 5 fixes to address this and allow the host to run down-level containers on up-level for process (Argon) isolation.
A fix to allow OEMs to reduce the inking latency based on the hardware capabilities of their devices rather than being stuck with latency selected on typical hardware configuration by the OS.
Key-rolling or Key-rotation feature enables secure rolling of Recovery passwords on MDM managed AAD devices upon on demand request from in-tune/MDM tools or upon every time recovery password is used to unlock the BitLocker protected drive. This feature will help prevent accidental recovery password disclosure as part of manual BitLocker drive unlock by users.
A change to enable third-party digital assistants to voice activate above the Lock screen.
The features are current off and Microsoft are turning them on as part of a controlled migration.
As you can see the update is only a minor change to the May 2019 Update at this stage and probably will only be a minor change when its released later this year.