vecna00
Speculation Specialist Wizard
Doesn't really feel like the right venue for an Eberron announcement. And it's really Luke Gygax's thing, so I kind of doubt it.
Once upon a time, I would have assumed they were saving it for a Gen Con announcement, but obviously they've moved away from Gen Con being an important date in recent years.
I don't really have a clue. It'll probably just come out of the blue. Felt like that last year. Kind of interested to see if there's a surprise something else that comes with it (like with the Ravnica+Eberron last year).
AD
I was banking on that for yesterday or today: The official announcement for the Eberron hardcover, and the announcement of a classic setting PDF. They could still happen, probably just not today.