From an anonymous source: Delphi 8 Update #2 should be out within a week.
Delphi 8 Update 2 delivers new demos, and updated source code, so check out the changes in the source and demos directory.
Note: Delphi 8 Update 2 is not Delphi 8 Service Pack.
In 2017, with the release of Delphi 10.2 Tokyo, Embarcadero introduced a specialized implementation of the Observer pattern into the System.Classes unit. While it has been in the wild for 9 years, it remains a "hidden" architecture for many, primarily because it serves as the invisible engine behind LiveBindings. Other than live bindings, you can also use the Observer pattern as a way to update component settings to the Windows registry, an .ini file, or persist it elsewhere.
System.Classes