List parameters: When writing a query, users can reference multiple values in a single list parameter by selecting a grid range in a sheet. Each cell will function as a unique value in the list. This enables more flexible or robust querying based on values already in the sheet. For example, this feature allows data admins and power users to configure input sheets that allow collaborators or end users to easily select options via drop-down or in the sheet for advanced filtering without needing to modify the underlying query. As a result, more users can independently self-serve insights and interact with Connected Sheets. 

Column aliasing: Users can create aliases for BigQuery column names directly within the Connected Sheet. Database column names can sometimes be unwieldy or lack contextual information for broader audience readability. Aliasing provides a way to substitute presentation-ready labels in the Connected Sheets interface without altering the underlying database reference. Users can continue to refer to columns by either the new alias or the original name in formulas and inputs. 

Source: Google Workspace Updates