I feel like we are moving from a stage of early adoption towards early mainstream
Its hard to figure out the S point at this time the main problem is getting people to understand what Bitcoin is without needing to use a whitepaper to explain it and getting people to start using it more easily.
I thought last year, when I was getting in and buy my first bitcoin, I was an part of the early adoption. Can't see that at this point, Sept., 2014. There are too many main stream companies that are accepting BTC as a form of payment and others working on a way to use BTC as implementation for product. Still more ripping off the idea (ApplePay), if not the technology.
No, right now we are at the tail end of early adoption and on the cusp of BTC being part of the main stream.
Just a matter of months up to a year before Bitcoin is as widespread as American Express or Paypal, etc...
Those leaning about BTC now, it's either jump in or be forced in with everybody else very soon.