Q&A: How do I Make a Repeat Affiliate Offer Fresh? - a podcast by Matt McWilliams, Award-Winning Affiliate Manager

I wanted to ask for your opinion about promoting a launch (this launch) twice a year to the same list. I promoted Chandler's last launch about six months ago. Should I promote only to the new subscribers or everyone? And if for all, how do I make it not look repetitive and nagging as this is not a fresh offer.