The cut-offs have followed same trend as last year. They have dropped in January to 450s in January, and then shot up again in the coming months. Also they have done three draws in last January too. First two draws a week apart, and third draw after two weeks from second draw.
http://www.canadavisa.com/express-entry-invitations-to-apply-issued.html
From March, it has shot up again with smaller draws. I am not sure if this year would be the same case as lots of and lots students would be entering pool as they complete one year of experience going forward. I don't see a reason why it would keep going down even up to 400 if they keep drawing 1500. In 2015, there were no refugees and there have been consistent 1500 draws, and the score has stayed between 450-480.