The General Meta Data Profile 1.4 has been published.
The HTML standard defines a number of standard link types for the
rev attributes, but it allows for additional link types and meta data types to be used if they are defined in a referenced profile. An increasing number of applications have recently begun taking advantage of this, and many so-called “microformats” have emerged. The General Meta Data Profile attempts to gather and briefly define most of the popular link types and meta data types currently in use and to provide a referenceable profile in the standard XMDP format.