Endovena: a dependency injection framework.

[JN via Digitalmars-d-announce]

I may be ignorant, can someone explain what's the difference 
between:

Container container;
container.register!(IGreeter, Greeter);
auto greeter = container.get!IGreeter();
writefln(greeter.greet)

and

auto greeter = new Greeter();
writefln(greeter.greet)

?