Blizzard details all nine new Forever dungeons (levels 13-60)
Blizzard's dungeon overview lists nine new five-player dungeons: Hall of Thanes (13-18, under Ironforge), Ruins of Lordaeron (15-20), Excavation Site (24-29, Wetlands), City of Dalaran (28-33, attunement quest required), The Drowned City (35-40, off Stranglethorn), Krol'dok Stronghold (40-45, Riverglades), Alcaz Prison (48-53), Blackmaw Hold (55-60, Azshara) and Shaper's Terrace (58-60, Un'Goro).
Source: Blizzard Entertainment, worldofwarcraft.blizzard.com