I just hit the motherload! All this was taken off the WotC site
* August: Forgotten Realms Campaign Guide, a comprehensive look at the setting, advancing the storyline 100 years. Also includes a threat chapter that treats what in the past would have been NPCs as unique creatures (e.g., warlock knights).
* September: Adventurer's Vault, full of magic items and equipment for characters, including alchemy, weapons, armor, tools, and plenty of useful tables listing them out.
* September: Forgotten Realms Player's Guide, targeted at (naturally) players, with new races (the drow, updated from the version listed in the Monster Manual, and genasi), a new class (swordmage), a new warlock build (the dark pact), character backgrounds, feats, and rituals. All of it will be useful not just for players in the Realms but for players in any campaign.
* October: Martial Power, with new powers and builds for the fighter, ranger, rogue, and warlord, plus new paragon paths, epic destinies, and feats.
* October: Dungeon Tiles: Streets of Shadow, with rooftop, street, and sewer tiles.
* November: Draconomicon, featuring chromatic dragons for all levels, new draconic monsters, ready-to-use lairs, hoards, rituals, magic items, and artifacts.
* November: Roleplaying Game Starter Set, including everything new players need to start playing but also geared toward educating new Dungeon Masters.
* December: Manual of the Planes, exploring the planes of existence with details on the feywild, shadowfell, elemental chaos, and astral sea.
* January: Open Grave, with undead creatures at all levels of play (Acererak!).
* February: Dungeon Delve, based on the popular format used at Gen Con, with delves for all levels (30 sets of encounters, 1 per level, and using maps built with the recent Dungeon Tiles).
* February: Dungeon Tiles: Caves of Carnage.
* March: Player's Handbook II, with eight new classes, five new races, and the primal power source. September's Dragon will preview a build from one of the new classes for folk to playtest.
* March: Feywild miniatures (with some old favorites, including the rust monster!)
* April: Arcane Power, with new powers, feats, and builds for arcane classes from the Player's Handbook and Player's Handbook II (such as the bard).
* May: Monster Manual 2 (including the frost giant at last!).
* June: Eberron Campaign Guide (from yesterday's seminar).
* June: Dungeon Tiles: Arcane Towers.
* July: Eberron Player's Guide.
* July: Divine Power.
* July: DDM miniatures (with Huge figures, such as the frost titan).
* August: Adventurer's Vault 2.
* August: Revenge of the Giants super-adventure (boxed, including tokens for all monsters needed to play the adventure; an homage to Against the Giants).