On Fri, Oct 18, 2013 at 12:28 AM, Erik Moeller <erik@wikimedia.org> wrote:
I think everyone agrees that the next step for Wikidata is expansion
into greater use in Wikipedia. As far as I can tell, the biggest
reason this hasn't happened yet isn't community reluctance, but simply
lack of support for critical data types (especially numbers) that are
needed for mapping entire infoboxes against Wikidata items.

That's not the case, to my understanding. 

As explained in https://en.wikipedia.org/wiki/Wikipedia:Requests_for_comment/Wikidata_Phase_2 the most recent consensus on English Wikipedia is that, regardless of data type, the community only supports including material from Wikidata when it doesn't already exist in Wikipedia. Basically that means that the status quo on enwiki is that you're not allowed to replace local data with references to Wikidata, in any part of article content or templates.

Now, that's from April, and consensus can change. But there are still serious problems in my view. For instance: we're still replicating the Commons problem, where people want to edit something that appears locally relevant, but requires them to go to Yet Another Wiki. Part of that UX problem will be solved by unification of accounts across the wikis, and it's not as big a deal with interwiki links, which are tertiary information and pretty advanced. But when it comes to any template content that appears as part of articles... well, it pretty clearly *is* held up by community reluctance on a number of fronts, not just for lack of comprehensive representation of current data types. 

--
Steven Walling,
Product Manager