Almost lost in all the announcements from Ignite was a bunch of amazing new features that were added to the Provisioned Resources/SQL Pool section (read SQLDW functionalities) side of Azure Synapse Analytics (formally called Azure SQL Data Warehouse). Here is a quick run-down of those features:
GA features:
- Performance: Result-set caching
 - Performance: Materialized Views
 - Performance: Ordered clustered columnstore index
 - Heterogeneous data: JSON support
 - Trustworthy computation: Dynamic Data Masking
 - Continuous integration & deployment: SSDT support
 - Language: Read committed snapshot isolation
 
Public Preview features:
- Workload management: Workload Isolation
 - Data ingestion: Simple ingestion with COPY
 - Data Sharing: Share DW data with Azure Data Share
 - Trustworthy computation: Private LINK support
 
Private Preview features:
- Data ingestion: Streaming ingestion & analytics in DW
 - Built-in ML: Native Prediction/Scoring
 - Data lake enabled: Fast query over Parquet files
 - Language: Updateable distribution column
 - Language: FROM clause with joins
 - Language: Multi-column distribution support
 - Security: Column-level Encryption
 
Note: private preview features require whitelisting.
More info:
Azure SQL Data Warehouse releases new capabilities for performance and security