The official Aquarion Blog has updated with an image of what appears to be a teaser poster for the next season of Sousei no Aquarion, tentatively titled 「裏切りの翼」 (Uragiri no Tsubasa – Wings of Betrayal). The title of that post is “???@Media Factory Summer Festa 2006″ which is where I assume the poster was shown (you can find the website for the Summer Festa here). The teaser poster seems to show Apollo carrying Silvia with blacked out Vectors and an Aquarion in the background. Kind of hard to tell what the series is going to be about on just one poster though.