So I don't really know if this falls under new news or not, but I saw it in an LFS yesterday and did think it was neat.
Basicly it was a seperate 'tank' that you put into your main tank for critters like crabs that need access to air. It had a clear top on it so you could see inside it. It came with an air pump so that fresh air would always be available to them. This is a bad description of this I know.
It was $30. I had never seen something like this before and did think the idea was pretty neat. I can't remember the name of the product or who made it, but I do know that it wasn't one of the major manufacter's.