To say there have been a lot of changes happening within the world of inbound this year would be a huge understatement.From Google's mobile-first approach to the emergence of virtual reality within omni-channel marketing campaigns, it's becoming quite clear that the definition of inbound marketing in 2018 is going to hold a much broader, and perhaps radically different meaning compared to what we know today.Let's take a look at inbound marketing's heaviest channels (SEO, social media, email, and content) and discuss where they're heading.Ready to dive in?