As the chart below (where I compare interest in the term "account based marketing" with "demand generation") shows, interest in Account Based Marketing has exploded over the last five years. For me at least, I can't remember the last I haven't heard or read someone talking about ABM having the solution to all ills.
As with most hot topics (see Sales Enablement) I take a very cynical, conservative approach to them. Far too often these hot topics are just ways to take old ideas and present them as new so that if you're a consultant, you can charge bigger fees for your services, and if you're an executive, you can promise that next panacea to get your boss or CEO off your back.
Account Based Marketing is not new. As I often say to people who claim it is: if you're involved in a B2B business and what you were doing before wasn't account based, then you were doing something wrong.
That said, ABM (as it's practiced by the those who are doing it right) is different in an important way. It formalizes and orchestrates a variety of actions, personalized and targeted in a fashion that enables selling organizations to penetrate accounts they wouldn't otherwise penetrate and expand business faster.