2015 is the year of turning point for bitcoin price comes out of bear market. 2016 is the year for bitcoin to be reported more in main stream media and used more as a currency.
I agree on the turn around year being 2015 - but I believe too 2016 more volatility in the price as the halving is happening pretty soon and people will speculate.
The outlook already seems to be positive.
We have had 2 disaster years - 2014 and 2015 (most of it).
The current price run up seems to be in anticipation of the drop in supply post block reward halving.