My peppers from 2011 season are still growing fruits and flowering while temperatures have started to drop to 32 at nights.

My question is if these plants survive, do I leave them alone for next year so they produce well OR do old plants not produce well? There are a few varities that I really like and would like to keep them. No I dont want to bring them in.

Thoughts? In 2011 season I got 500 gms of dried crushed red pepper that is very delicious and all organic.