SQL Prompt should fully support Azure SQL Managed Instances. This includes offering suggestions for all objects (such as system functions, tables, views, etc) which are usable in Managed Instances. For example, CURRENTTIMEZONE and CURRENTTIMEZONE_ID (which were recently implemented in SQL Prompt, but only for Azure SQL Database). All other functions I've tried seem to be working fine, but it would be nice to know that Azure SQL Managed Instance is officially supported by SQL Prompt.