Some Chase Sapphire Preferred cardholders have received a targeted upgrade offer: upgrade to the Chase Sapphire Reserve and earn 25,000 points! There is currently no direct link for this offer, so the only way to check is to see whether you received an email.
In fact, the end of the year is the best time to upgrade. If you received this offer, it is basically a no-brainer to upgrade. For details, see:
