http://pokemondb.net/pokedex/national If you scroll down to Landorus, Thunderus, and Tornadus, their images are missing. However, both forms have been released.
EDIT: If you refresh the page, the images show up. Why? It would be more convinient for it to show up the first time.
OK I made a change so that it will fix the issue for everyone without needing to reload.
It happened due to a "caching" issue - we set images and other files on the site to "cache" for a long time, which means the browser doesn't keep downloading the same images every time a page is opened. With the form changes and stuff the image needed updating :)
Good news: the proper Kyurem sprites are shown on http://pokemondb.net/black-white-2/exclusive :D
