The NetBSD project has decided that we will not any longer maintain translations. Experiences have shown that translations are usually not maintained after an initial translation effort, and stay outdated. We do not have the resources to keep translations in sync with the English website and documentation.
People who want to translate parts of NetBSD's website or any of the guides (NetBSD Guide, pkgsrc guide) are welcome to do so when they are also hosting them at their site. Please talk to www@NetBSD.org for linking to those external translations then.