Siege of Orgrimmar updating to Warlords-mode raiding in 6.0

Mythic mode raiding will be coming into play a little sooner than previously thought. A tweet by Lead Encounter Designer Ion "Watcher" Hazzikostas yesterday confirmed that we will be seeing Warlords-style raiding implemented into the Siege of Orgrimmar raid with patch 6.0. The raid structure in Warlords includes Raid Finder, Normal, and Heroic difficulty all available in Flex-scaling formats. Raid Finder mode as it stands today will still be called Raid Finder mode, however Flexible difficulty will now be called Normal, our version of Normal raiding will be Heroic, and Mythic raiding, a 20-man only format, replaces our Heroic mode as it stands today.

While we knew these changes would be coming in 6.0 via screens shown at BlizzCon 2013, what we didn't know is that this format will be applied to Siege of Orgrimmar, as well as all raids going forward into the new expansion. A later tweet by Hazzikostas pointed out that there will be plenty of advance notice before the change goes live, and there will also be more information on the topic at a later date. Considering we're just now seeing patch 5.4.7 on the PTR, we shouldn't expect Mythic modes to be dropped on us immediately.