While third-party Netflix applications are somewhat limited as to what they can offer anyway, some folks still love to use them. Netflix is putting an end to any future third-party clients however, by killing off the public API program.
Currently active clients will continue to function, as all API keys currently issued will remain active. What it does mean is that no new keys will be issued to third-party developers, so what we've got today is as far as it goes. Additionally the developer portal is being set to read-only, and the OData catalog will be retired in April.
Netflix says that the changes are being made so as to focus on the products and features most used by its subscribers -- or in other words, the official Netflix clients. It's still a little sad to see future third-party apps killed off completely, but given the times we live in -- Twitter being the obvious example -- it isn't all that surprising either.