Digital mags must contain all of a mag's content, but not in an identical layout, says ABC

In light of technological developments like the iPhone and iPad, the Audit Bureau of Circulations (ABC) has modified its definition of a digital magazine.

The new standards state that a replica digital edition must include a print edition’s full editorial content and advertising, but it no longer needs to be presented in a layout identical to the print version. Replica digital editions will continue to be included in a magazine’s circulation guarantee, or rate base.

The first magazine to seek certification of an iPad  application was Wired. GQ magazine has offered an iPhone and iPod Touch replica application since December.