The official Japanese Sega Superstars website has re-launched. It now features Flash movies, wallpapers and Puyo Puyo paper craft:
^ Two Sega Superstars wallpapers are currently available
^ Print out the paper craft sheets to make these two Puyos
More content is planned for the future including artwork* and strategy guide sections.
[*Disclaimer: Information obtained via machine translation and so may be inaccurate].