However, now that the new cereal is on store shelves, there's plenty of room for confusion. Kellogg's didn't replace its original Rice Krispies cereal (which contains barley malt) with the new gluten-free version; instead, it's marketing both, and most stores are selling both.
That means it's possible to choose the wrong product. I've heard reports that some people have in fact bought the wrong box (thinking mistakenly that the original Rice Krispies cereal is now gluten-free), and glutened themselves in the process.
Therefore, when you're shopping for Rice Krispies, make sure you choose the tan and blue box with the big "gluten-free" banner on it. Avoid the original blue box, since that cereal's not gluten-free.
Now that we have a gluten-free version of Rice Krispies, it's possible to make some classic recipes that rely on Rice Krispies. Here's a recipe for gluten-free Rice Krispies Treats.