Starting in 2012, Fortune will have editorial themes for all 18 of its issues, reports Lucia Moses. The new ones will include “The Shape of the Future” (naming the people, companies, and ideas that will most influence the world in the years ahead); “How it Works” (exploring the secret sauce of products and concepts); “Best Advice I Ever Got” and “Venture Special,” a look at small businesses. Fortune managing editor Andy Serwer says because advertisers like theme issues so much, the magazine can devote more editorial space to long-form journalism. “That means they’re fat issues, and then we can do all this other stuff.” Moses points out that Fortune’s move is the latest example of how business magazines, are trying to stay relevant in an online world. Bloomberg Businessweek and Bloomberg Markets are trying to get in on the popularity of rankings with a list of the world’s most influential people and plans to identify the world’s richest people.