The list of Winter ’19 features below apply to Salesforce Classic.

There are additional Winter ’19 features available to Salesforce Lightning Experience and Classic, Lightning Experience only, Community Enhancements, Other Enhancements in the Winter ’19 Release Highlights post.

Note: These features are not listed in any specific order.

1. Add Quip documents and spreadsheets to standard objects (accounts, opportunities, leads) and most other records in custom objects.
2. If users do not have access to the Files tab, they cannot open file thumbnails into full previews. They would need to switch to Lightning Experience, or download the file to see the full preview.