Although the market has known long beforehand that Jan. Fed meeting wouldn't hike(and indeed didn't hike), Fed futures market have seen quite significant change in future hike predictions.
Specifically, now three hikes in 2018, March September and December are fully baked in and one more hike by December 2019.
This is significantly different what the market was predicting just one or two weeks ago. Please refer to my prior posts monitoring Fed Hikes.