Google is going to create a separate mobile index within months, one that will be the main or “primary” index that the search engine uses to respond to queries. A separate desktop index will be maintained, one that will not be as up-to-date as the mobile index. The news came today during a keynote address from Gary Illyes, a webmaster trends analyst with Google, at Pubcon. Illyes didn’t give a timeline in his talk, but in a follow-up with Search Engine Land, he confirmed that it would happen within “months.” Google first announced that it was experimenting with the idea of a mobile index last year at SMX East. Since that time, Google’s clearly decided that a mobile index makes sense and is moving ahead with the idea. Get the full story at Search Engine Land