Let's see - just d20 or OGL as well?
For d20, we have;
The Tome of Drow Lore - 256 pages of dark elf goodness.
Monster Encyclopaedias I and II - all new monsters, and there is talk of a third volume based around Epic level creatures. . .
Ultimate Equipment II - due very soon, lots of cool new kit, absolutely no magic items. . .
The Drow War Trilogy - the first in the Complete Campaigns series that will take characters from level 1 to 30.
Heroes of Fantasy - new core classes for fantasy d20.
Ruins of the Dragon Lord - a massive dungeon in a box set.
Great Big Monster Book - the Mother of all monster books (see thread in Publisher's forum), weighing in at 1,000-odd pages, to be released at Gen Con.
Wars RPG - based on the CCG.
How is that for starters?