Microsoft recently announced that the next round of SQL Server Cumulative updates for all supported versions of SQL Server will be delayed by about a month. This is perfectly understandable in the current circumstances.
- SQL Server 2019: SQL Server 2019 CU5 will ship in June, 2020
- SQL Server 2017: SQL Server 2017 CU21 will ship in July, 2020
- SQL Server 2016: SQL Server 2016 SP2 CU13 will ship in June, 2020