Thank you for your question.
you can read more about the different tile templates and visual elements that can be added to each of them. In short, you need to define a new RadFlipTileData and set its WideVisualElement and/or WideBackVisualElement to the visual element that you want to be used in the tile.
Make sure that you have checked the value of the AreNewTilesSupported
property before trying to use these features in a WP7 application. Also you need to have a device and/or emulator with WP7.8 or newer in order to use these new tile templates.
I hope this information helps.
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