The Wikimedia Incubator is not yet a Wikidata client. The Incubator is unlike all other Wikimedia Foundation projects in two senses: 1.) unlike most projects, it hosts multilingual content in a central wiki but that content is separated by folders in the directory of the site and 2.) it does not seek to create a free-standing project of its own but simply to start work on editions of other projects (e.g. Wikipedias in new languages)—once a project is deemed sufficiently mature, it is closed on Incubator and exported to its own domain. There has been discussion of hosting wikis which are likely to remain small but there is no unified policy on this yet.