Yup, as said. All depends on your predicted flying pattern for next year:

If very slim, then no point for Silver (you will hardly reap its benefits.
If heavy in J / F then still no point as you will be piling up the TPs then and enjoying the benefits without the status (for the short time that it will take to gain status)
You will get most from Silver if you are going to be taking lots of Y flights: lounge, bagging exit row seat etc.

has been mentioned other factors like the change in tiers and the mile bonus. If these affect you then take these into consideration.