My adventure Chaos Scar: Scarblade is now live in Dungeon Magazine for D&D Insider subscribers. It's my first Dungeon and DDI contribution. Come to think of it, it's my first 4e to be released (though not my first 4e first project).
Somewhere in the Chaos Scar is the Proving Pit, a gladiatorial arena that is associated with an enticing magical sword called the Scarblade. Ruling over the Proving Pit is Morrn Bladeclaw, its foremost champion and former owner of the Scarblade. To claim the mystical blade, challengers must face Morrn Bladeclaw, but not until they've bested the pit's lesser champions first. But the Scarblade, and the Proving Pit itself, might have something to say about the situation. "Scarblade" is an adventure for characters of levels 7 to 9.
Good luck and have fun!