The "orientation" flag is currently forced to horizontal in 1.1 framework when creating a Grid instance. Our entire UI paging model is built around scrolling these grid pages horizontally for content. (Vertical grids would lock a user into the grid when trying to move up or down through the view - the Grid would not release focus until it was at the ends of the dataset.) There may be uses for a "vertical" grid that does not receive focus and shifts up and down when triggered by another control (such as a page indicator). This vertical shift would only be apparent with animation enabled, and a non-focusable "grid" receives no additional benefit from "grid" code. If a vertical animation is desired on a future platform with animation enabled, a different control (such as an element.Button) should be used in conjunction with the Engine's animation functions.