that's it? what is actually being revealed?
A cool Spelljammer Slipcase with three hard cover books in it, a DM screen, and a Poster map of the Rock of Bral! oh what each book is a tiny 64 pages, sigh. Huge changes to the setting from 2e, when it first cane out, now with its 5e version. Playable races Ooze People, Thrikreen, Autognomes, Giff (Hippo folk), Hazdoo (Monkey folk) and something new to Spelljammer, Astral Elves. Wizskids is releasing a tie set of minis including huge Astral Dreadnaught and Solar Dragon.
New Dragonlance Adventure & Setting book later in the year and a new Dragonlance Battle System (Board game). You can mix the RPG stuff with the board game if you choose, there are rules for it. Playable Kender and Draconians confirmed, other races possible.
New D&D starter set with digital tie ins.
D&D Onslaught, a minis game.
More details on the Radiant Citadel.