Kibana 4 and Search @ Wikipedia
The 17 of June there will be a unique chance to hear about Kibana 4 from Rashid Kahn, the creator of Kibana. But that is not the only thing, Nik Everett will also join to talk about the elasticsearch implementation at Wikipedia. This session is organised by the Elastic(search) Meetup
If you want more information or want to join as well, check the meetup page.