Almost four years ago, it was announced that Warner Bros. Pictures would be turning the popular 1980s "Thundercats" animated series and toy line into a CGI-animated feature. The plot was to have focused on Lion-O coming of age as the leader of the Thundercats. The project apparently never took off, but now the below test footage from the show has made its way online, thanks to Flixist.
Warner Bros. Animation is currently working on a different animated show.