This question has been settled with a final result: "No: Less than 45%". Trading has finished.
The Economist reports pro-union forces ahead and discusses the potential impact of undecided voters towards a Yes-vote. [1]
Two polls just two weeks before the referendum point to narrowing gap: [3]
CNN reports 55.35% for No and 44.65% for Yes with a very high participation of 84.6 %. [4]