For the current relationship of this specification to others, see this specification group: Provenance .
| 2013-04-30 | Group Note |
| 2013-03-12 | Working Draft |
| 2012-12-11 | Working Draft |
| 2012-07-24 | Working Draft |
| 2012-05-03 | Working Draft |
| 2012-01-10 | First Public Draft |