Version 2.0 released recently.
"These 12 guidelines — provided as a Quick Guide plus an in-depth Complete Guide — aim to clarify the issues affecting accurate reproduction and management of digital image files. Although they largely reflect a photographer's perspective, anyone working with digital images should find them useful. The guidelines have three primary goals:
Digital images should look the same as they transfer between devices, platforms and vendors.
Digital images should be prepared in the correct resolution, at the correct size, for the device(s) on which they will be viewed or printed.
Digital images should have metadata embedded that conforms to the IPTC standards, thereby making the images searchable, providing usage and contact information, and stating their creators or copyright owners."