These items are now up for advanced order on GW's site. I'm not sure really what to say about these items. I don't think I would leave my brushes in the water pot like its designed for, and the palette has a unique look to it, but its.... just a palette after all.
I am assuming these items are splash release.
http://www.games-workshop.com/gws/catalog/productDetail.jsp?catId=cat1490603&prodId=prod50015a