A new Fable III expansion was just announced and dated at Microsoft’s pre-GDC conference. The expansion is to be titled ‘Traitor’s Keep’ and will include three new levels filled with quests for players to embark upon. The new levels are named ‘Ravenscar Keep’, ‘Clockwork Island’ and ‘Godwin Estate’. Traitor’s Keep will be launching on March 1 for 560 Microsoft points and increases Fable III’s total gamerscore by 250 points. You can find a handful of screens for the new expansion, below.