Canonfire! have been murmuring about a listing of D&DNext compatible adventures at Wizards, one in particular will be showing in Dungeon's December issue, titled the Battle of Emridy Meadows. This may very well be the last issue of Dungeon as well before their hiatus. This "Battle" adventure must tie into the Temple of Elemental Evil overview published in issue #425 of Dragon.
Oddly I previewed the blurbs for Dragon #425 (subscription only), but didn't later review it I think (Gencon hangover?). Anyhow, the Temple article in #425 had a good amount of Greyhawk content, nothing left out that was critical. It even incorporated canon from the later Return to the Temple of Elemental Evil module from 2nd edition. Author, Skip Williams certainly did his homework trust me; the article mentions Veluna, Furyondy, Kron Hills, etc.
Back to the Battle of Emridy Meadows. I am intrigued to see what comes of this. Will it be a historical battle reenactment? I highly doubt it, mass combat wouldn't translate easy in playtest material. Perhaps the battle will be a backdrop to a PC-led sortie behind the lines. Or maybe it's a return to the scene of the battle years later to fight some lingering effects still there, or originating from Zuggtmoy's lair. So many questions, and it should excite any Greyhawk fan.
Lastly, if you aren't familiar with the battle somehow, here, I wrote an article about it at Canonfire.