In addition to the above changes, when Patch 6.0 arrives:
Flexible Raid difficulty will cease to exist as it does now, and will be removed from the raid queue interface. The new Normal difficulty of Siege of Orgrimmar will offer a similar experience to that of Flexible Raid.
The new Group Finder tool will be available, designed to help players create and find groups for Normal and Heroic Siege of Orgrimmar and other cross-realm group content.
Siege of Orgrimmar achievements will be relabeled according to the new difficulty structure (e.g. “Heroic: Malkorok” will now be “Mythic: Malkorok”). Credit for these will be retroactively awarded to players who earned them before Patch 6.0.
The Garrosh Hellscream “Ahead of the Curve” and “Cutting Edge” Feats of Strength will cease to be obtainable.
This means that the Kor’kron War Wolf, awarded by the “Ahead of the Curve” Feat of Strength, will also cease to be obtainable upon release of the pre-expansion Patch 6.0.
With the release of Patch 6.0, the drop rate of the Heirloom weapons from Garrosh Hellscream on Normal, Heroic, and Mythic difficulties will be significantly increased.
Players who have yet to get any Heirlooms will have a 100% (guaranteed) chance of getting a spec-appropriate Heirloom when defeating Garrosh on Normal difficulty or higher.
The chance of receiving additional Heirlooms beyond the first will also be increased.