SQL Server 2019 is the next major release of SQL Server, with more of the industry-leading performance and security that customers rely on for mission critical workloads, and new, deeper SQL Server integration with big data.
To get SQL Server 2019 CTP 3.2, go to the SQL Server 2019 web page.
Or use a SQL Server 2019 CTP virtual machine in Microsoft Azure to get CTP 3.2.