To explain the confusion! It has been anouced several times by the mod that Beta III is the current one, cause 1.0 was a released with so many bugs it was nearly unplayable! And to why the 1.0 version is still up, well it wouldn't change much cause Beta IV is nearly in release stage!!! And as Akira has said the front page will be changed then!
To Bengal: Yep, I think the event department changed it! And it will be released in the new version!
Edit: Sorry if the answer is a bit hard, but people still asked which version is the latest, even though the answer was posted right before them!!!