I disagree.
Just because people hear of it, doesn't mean they'll jump right in and buy into it.
I've been telling people about bit coin for the last 9 months - dozens and dozens of people - not a single person bought into it.
I think the majority if people are like this. And will be so for a long time yet.
About half of the people I've had repeated conversations with, and have done some research of their own, have gotten involved. And this is only in the last 3 months. I'm not suggesting it's mainstream, far from it, but reasonable people will give it a look.
"Normal" investor, like stock market player are still afraid of BTC. I talk with a couple friends and buddys, right now with the trend down. Almost all say get out, it is dangerous. So not many ppl will become much interesting in BTC right now.