I saw the CT catalog and I don't recall anything new. It appeared to me to be the same Ultimate Pounce powder that has been around for a while. It doesn't rub out like chalk, you have to apply heat or launder to remove the marks. They make their own stencils as well that are different from tradtional stencils in that they use some sort of screen in the openings instead of cutouts. The benefit being the pounce pad does not hang up on areas of the stencil.
I have only used the tradtional pounce chalk, not the ultimate but many have used the ultimate and been pleased with the results. Don't load too much chalk in the applicator and it isn't quite as messy. I like to dampen the surface with a spritz of water before applying to keep the dust down and to keep all my chalk from boucing off with the hopping foot. It can be messy but the convenience and ease of marking makes up for it.