The company just formally announced the Series 5 and it turns out it's going to be joined by the next-gen Series 7 Slate as well. (Also known as the ATIV tabs in regions outside the US.) The two 11-inch tablets more or less look alike, except the Series 5 is powered by an Atom-based Clover Trail processor, while the Series 7 packs Core i5 guts.
ENGADGET: Samsung announces Series 5 and Series 7 Windows 8 tablets with S Pen apps, optional keyboards