UPDATE (2/5/10): Strawberry Chex has been discontinued by General Mills due to disappointing sales.
Wegman's supermarket in Cherry Hill, NJ is now carrying the GF formulation of General Mills Honey Nut Chex. The front of the box has a large "Gluten Free" label, and the back of the box describes the new version.
According to Gluten Free Post, General Mills Corn Chex also is now GF, and the General Mills web site lists Cinnamon Chex as gluten free as well. These developments follow on the heels of Rice Chex and Strawberry Chex recently being reformulated to contain only GF ingredients. Other General Mills cereals that are GF-friendly include Honey Kix and Chocolate Lucky Charms.
Congrats to General Mills for continuing the trend the company started with Rice Chex.