The Jesse Rogers story cited by brjones seems to suggest that the decision not to extend Rizzo with two years left on his contract is some sort of big deal, and the headline even suggests Rizzo might walk after those two years.
Rizzo, as his agent points out, has made it clear that he wants to be a Cub for life, and there is no other player who is more likely to make a team friendly deal when the time comes. With the Cubs focused on the future of Baez, Bryant, Contreras, and even Schwarber, there is no reason to spend the time and effort on working out an extension for Rizzo at this time.
Some fans on twitter are already freaking out over this, along with other non-events. It's just that time of year.