The Burnt World of Athas

The official Dark Sun website

Ashes of Athas distribution petition

If you're wondering what's happened with the Ashes of Athas home / non-convention play, it seems there's been some kind of snag with distribution permission.

There's a thread on the WotC site acting as a sort of petition, asking Wizards to prioritize resolving the confusion. If you're interested in playing Ashes of Athas, and you can't make the conventions, this is where you want to weigh in. Please remember that hostility just makes the overseers mad.