No, it's not a phone. That's the "Cooler Master Cryo Phone Cooler". It's a phone cooler that attaches to the back of your phone to provide additional cooling while gaming and what not. So when you said
They wouldn't work on either(phone or tablet) because that's not the type of products they make.
Not really true, Cooler Master had already made a cooler for phones. It's not much of a stretch to say they might release another product in the phone category.
If Framework made a modular phone then CM could make a modular similar to the one I linked that could attach to the FW phone. Or the phone wouldn't involve CM at all and they're working on a different product altogether.
What do you think the next Framework/Cooler Master collaboration is?