UPDATE (3:20 p.m. MT): It appears new affiliate possibilities will be explored by the Rockies' current Triple-A, Double-A and Short-Season A clubs, per Baseball America's Josh Leventhal. Leventhal notes that the most surprising non-renewal, Colorado Springs, likely came about due to the Rockies' issues with Security Service Field.

Wow. Stay tuned.

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The Rockies recently extended their player development contract with High-A Modesto, but at least one affiliation change in the organization could occur as soon as tomorrow, according to Baseball America's Josh Leventhal.

The main affiliation currently up in the air is Tulsa, which has been Colorado's Double-A home for more than a decade. Tulsa is the lone Texas League team that has yet to extend its PDC after this season. Five other Double-A teams -- two in the Eastern League and three in the Southern League -- have expired PDCs.

The Rockies also still need to work out deals for their Triple-A and Short-Season A operations. It's highly unlikely the Rockies would leave Colorado Springs after the Sky Sox recently installed a humidor and replaced their entire playing field, but the Dodgers' exodus to Oklahoma City opens up an intriguing opportunity in Albuquerque, so who knows.

Colorado previously liked Salt Lake City as a potential Triple-A destination, according to a source within the organization, but the Bees recently re-upped their agreement with the Angels through 2016. There are officially eight Triple-A cities -- seven of which reside in the PCL -- that have expired PDCs.

The Rockies have a few options to choose from at the Short-Season A level, as well. Aside from Tri-City, Colorado's Northwest League affiliate for 22 years, three other NWL teams and a pair of New York-Penn League teams are currently looking for a parent club.

Colorado is, if nothing else, stable in its minor league operation. In the last decade (since 2005), the organization has made only one change: the purchase and relocation of its Pioneer League team from Casper to Grand Junction. The team's ownership of the Grand Junction team renders a PDC useless, and the Rockies have agreements with Asheville and now Modesto in place through 2016.

You can keep track of the full list of PDCs here, and we'll certainly keep you updated on any Rockies-related happenings.