https://wccftech.com/windows-10-1903-build-18351-7-available-slow-ring/

Microsoft has started to release preview builds from the upcoming Windows 10 April 2019 Update to Insiders in the Slow ring. Today’s release brings Windows 10 Insider Preview Build 18351.7 (KB4492310) to the Slow ring and was made available to the Fast ring Insiders only last week.

Since this is a newer version of this build that was released to the Fast ring earlier, it also includes an additional fix that addresses the issue that caused “Chinese versions of multiple games to not work,” Microsoft wrote.