Just because merchants are starting to accept bitcoin doesn't mean the price will go up or the bitcoin adoption will increase.
This year is a year of venture capital money flowing in like crazy, just look at the facts. There are graphs that show this. 2015 is the year with the biggest pump in VC money so far.
Actual BTC price will be stable. This is the last year for us peasants to get as much BTC as possible while its affordable to buy entire units of BTC.
I think the same was sort of true in 2014 but did not lead to the rise in the price of bitcoin then. I would hope for a stable price than a pump.