Augmented Reality Guidelines

Not exactly standards, and more details would be very useful, following up

New guidelines point to an augmented future
Lockheed Martin, Procter & Gamble and Caterpillar joined 62 other organizations to create hardware and software guidelines for using augmented reality on the manufacturing floor ....

(Update) With more details in IndustryWeek.
Which mentions the Augmented Reality for Enterprise Alliance (AREA)
See also the AREA blog which contains some interesting example.