Just published by the “CSV on the Web” working group:
CSV on the Web: Use Cases and Requirements
http://www.w3.org/TR/2014/WD-csvw-ucr-20140327/
Model for Tabular Data and Metadata on the Web
http://www.w3.org/TR/2014/WD-tabular-data-model-20140327/
Read more:
http://www.w3.org/blog/news/archives/3758