Blizzard have detailed their upcoming plan to eventually release details of how they will finally describe the as yet unrevealed changes being made to Diablo 3 in patch 1.0.4. It's sort of a patch notes preview preview, a broad overview of a forward look at the next stage in development. Gosh, they do know how to tease us, don't they?
Chief among the changes mentioned by Bashiok in the post on Blizzard's forums are improvements to Legendary Items (they're getting stronger) and the way Magic Find works (it's being nerfed). Unmentioned are the suspected upcoming changes to the Auction House.
The patch will be previewed across no fewer than five separate developer blogs, soon to be published on the Diablo 3 site. From Bashiok's post:
A nice little bundle of words on the way then, tumbling straight from the brains of Blizzard's finest. Also promised are more interviews and developer live chat sessions as the patch approaches. You can read the ensuing chaos in the forum thread right here.