This week has been very busy for Windows Insiders with two fast ring builds and one skip ahead build, and now we have a new slow ring build. Build 18362 was released to the slow ring on the 21st and contains just fixes.
There have been reports that some insiders are having issues installing this build, so if you do make sure you report it via the feedback hub.
UPDATE 3/22: Hello Windows Insiders, we have released Windows 10 Insider Preview Build 18362 (19H1) to Windows Insiders in the Slow ring.
[ADDED] We’ve received reports of Windows Insiders encountering install issues trying to install this build in the Slow ring with an associated error code of 0x80242016. We are actively investigating and ask that affected users upvote the following feedback item: https://aka.ms/AA4jxt8. We will share additional information as available.