10.3.3 is the last expected release before 10.4, planned for some point in first half of 2020, and bring us
- 64-bit Android
- iOS 13
- MacOS Catalina (Delphi)
- Enterprise Connectors (Enterprise and Architect SKUs)
- Numerous fixes to VCL, RTL and IDE
- 180+ user reported issues
Dalija Prasnikar have some useful observations on her blog.