As my friends and students know, I like to make a bet with them, at any time, that there will be some new Big Data development within the next 30 days from the bet.
I think this one qualifies quite well: ElasticSearch just announced that they got funded to the tune of 70 million US dollars: http://www.elasticsearch.com/blog/press/elasticsearch-raises-70-million-series-c-financing/
So why this is big? It shows that not only Big Data infrastructure companies, like Cloudera, who got about 1 billion dollars a month ago, but also more vertically oriented startups are just as important.
Another bet can start today - anyone?