The CSVW WG has decided not to explore the details of template-based mappings (whether at syntax level or in terms of RDF graph patterns).
Instead, a W3C Community Group is expected. This place serves to point to work-in-progress discussion on the charter for such a group.
See also email discussion:
- http://lists.w3.org/Archives/Public/public-csv-wg/2014Nov/0028.html "chartering an Advanced Mappings Community Group"