Hi,
You'll find some over here:
SQL Server 2017 Release Notes
https://video2.skills-academy.com/en-us/sql/sql-server/sql-server-2017-release-notes?view=sql-server-2017
I'm not aware of an official list of known issues for a specific SQL Server version, you may ask in the dedicated SQL Server forum over here:
https://social.technet.microsoft.com/Forums/sqlserver/en-us/home?category=sqlserver
Best regards,
Leon