KCCI has a story about a DOT study on turning the I-35/80 interchange with Hickman Road (US 6) from a diamond to a diverging diamond. On a diverging diamond, traffic temporarily switches sides of the road; there’s an explainer graphic in the video. All the interviews are with city officials, so that may be where the TV station got wind of what’s going on.
While the state hasn’t announced any plans for a diverging diamond at Hickman specifically, there are two others coming to the Des Moines metro area: One in Dallas County on the “Grand Prairie Parkway” (Alice’s Road extension) and one at First Street in Ankeny. The latter will be part of six-laning I-35 from that point north to the new Ankeny exit.