It's more like there wasn't that much information on the game until recently, some vague stuff and some general trailer like videos(the original trailer was pretty well received iirc on the FoH forums). Recently though they've been going into PR mode since beta is about to start and they want to start the hype machine, so there's a ton more videos and since they're pretty good, people are taking notice of the game. Also the game is being shown in various conventions and stuff. This is very similar to GW2 pre release if you remember, GW2 was announced like 2years before it was playable/had gameplay videos, and while some people kinda followed it most people ignored it until it went into beta announcement/class reveal/gameplay videos/convention displays mode.