I doubt any promo will come prior to the launch of WOH.

I could image a promo for March in terms of double tier level nights/base points, like they used to have many many years ago just for the month of January. This could motivate a couple of 25-stay-Diamonds to maybe consider re-qualifying on a nights basis, and would help me to get 60 as well. I ended 2016 with 56 nights...