From publisher blurb:
Heroes Ready for Anything, Anywhere
Dauntless adventurers arise from among the spirited races of the warforged, shifters, changelings, and kalashtar. These bold explorers hurl themselves into the most dangerous quests with an unquenchable thirst for fortune and glory.
This supplement for the D&D game provides detailed information on the psychology, society, culture, behavior, religion, folklore, and other aspects of the races originally presented in the Eberron Campaign Setting. Other core D&D races, such as elves and halfings, are addressed as well. In addition, Races of Eberron also provides new substitution levels, prestige classes, feats, spells, magic items, equipment, and other options for creating exciting characters ready to explore any campaign world.