'Through the summer'
The section of the previous statement that markets are looking for Draghi to possibly clarify tonight, is the one where they noted that interest rates would remain at current levels 'through the summer' of 2019.
Using September 2019 as the benchmark for market expectations in terms of a hike... If in fact it turns out that Draghi likes the cold beach water and wants to get his summer swim in nice and early, then this would be bullish euro.
On the other hand, if Draghi isn't a fan of the cold and sees a later 2019 summer on the cards, then it would be bearish euro.
Doing the southern to northern hemisphere, seasonal math in my head made that analogy harder than it should have been...