I'll field this, since I'm the magazine's staff writer. Titles like the Mega Drive/SNES book are compilations of older content, produced by Imagine Publishing's bookazines department, because the Retro Gamer team is too small to compile and review these editions in addition to producing the magazine itself. The office-based team consists of myself, Jon (designer) and Darran (editor), as well as Steve (production editor) who also looks after Play, so it's a tight ship. I'm not sure what (if any) revisions are performed by the bookazines team, but I'm guessing that they're minimal as the team lacks expertise in the subject. As for our own writing process, we always write based on the best information we have available at the time and obviously expect the same from our freelancers. Sega Retro is a resource that we use when performing research, too - myself and Darran have both been using the site this week, as I'm writing about Crazy Taxi and he's trying to track down developers to interview. However, it's highly likely that when the article in question was written, November was still the best information available - the last major Mega Drive article that appeared in the main magazine was in January 2013, so it would have been sent to press before this topic was started.