One potentially big thing happening before this end of this year is that not one but two different Bitcoin Futures markets will be opening in the US in December, starting Dec. 11.  It is unclear if this will be good/bad/indifferent for BTC price but it could cause a move one way or the other.

Personally I'm expecting:
end of 2017: $13k
end of 2018: $25-30k
end of 2019: $50-60k
Mid 2020: $100k

Fingers crossed!