You can take George R.R. Martin out of Westeros—however briefly, since we’re still waiting on you-know-which book!—but you can’t take Westeros out of the author, at least thematically. Martin has just signed on to executive produce an adaptation of Roger Zelazny’s sci-fi tale Roadmarks for HBO.
Source: io9 – George R.R. Martin Is Executive Producing Roadmarks, Another Dragon-Related HBO Series