10-player Heroic mode

From WoWWiki

10-player heroic mode refers to a new raid difficulty setting. This setting is accessed from the raid leader's portrait menu; currently the only other difficulty settings are 10-player mode, 25-player mode and 25-player heroic mode for raids.

See also

Hard mode Dungeon difficulty: Normal mode (deprecated in Patch 3.2.0). Heroic mode (deprecated in Patch 3.2.0). 5-player mode 5-player Heroic mode

Raid difficulty: Normal mode (deprecated in Patch 3.2.0). Heroic mode (deprecated in Patch 3.2.0). 10-player mode 10-player Heroic mode 25-player mode 25-player Heroic mode