Sometimes they come as early as Nov, sometimes as late as mid-January. For 2017, they came out in late December 2015 and included a major change for SSR to switch to a standard and preferred room booking categories. From past experience, the later they arrive the more likely a change of some significance is being made, e.g., the biggest overall change that was ever made, to significanly reduce weekend points while raising weekday made several years ago, came out mid-January just before members needed the
point charts to reserve Jan 1 of the next year in a Dec 26-Jan 2 reservation.