Emblem System Changes
Both the 10 and 25 player instances of the Crusaders' Coliseum drop a new Emblem of Triumph.
Any dungeons that previously dropped Emblems of Heroism or Valor, such as Naxxramas or Heroic Halls of Stone, will now drop Emblems of Conquest instead. Emblems of Conquest can still be converted to Valor or Heroism.
The Heroic dungeon daily quest will now reward 2 Emblems of Triumph and the normal daily dungeon quest will reward 1 Emblem of Triumph.
I'm guessing that tiered badge levels haven't worked out so well for continued use of the 12 - soon to be 13 - level 80 5-man dungeons in the expansion.
That said, it seems bizarre that you could knock off a 5-man boss that drops ilvl 200 rare loot and walk off with an [Emblem of Conquest] good for ilvl 226 epic loot - effectively three loot tiers above the content you just tackled. It's especially odd because the Conquest vendor prices range from 19 emblems (necklaces) to 58 emblems (two pieces of the Ulduar ilvl 226 class sets), prices that were presumably based on an expectation that players would not be downing that many bosses in Ulduar.
Again, I don't disagree with the motive, I'm just saying that this sounds a bit like overkill. I could see bumping every content tier's badge quality by a single tier, but jumping by two tiers in a single patch feels excessive. Then again, I guess even semi-serious raiders have long since run out of stuff to do with Valor emblems.
Also, one might expect to see very high prices on the new Triumph reward vendor if we're allowing players to obtain 3 of the new badges per day from daily 5-man quests.
It'll be interesting to see if this major change in design philosophy stands, and/or if we get any explanation that goes beyond my speculation on why they might have made this call.
Edit to add: Here's the staggering part of this change - with Conquest emblems (which can be traded down to lower tiers) a mage can get ilvl 226 items in 5 of the 8 armor slots, with ilvl 213 for the other three, along with an ilvl 226 neck, ilvl 213 cloak, and 2 ilvl 213 rings. Some of those items aren't exactly best in slot, and you'd still need to look elsewhere for trinkets (or live with the old ilvl 200 ones for Heroism), and your weapon/offhand/ranged stuff.
Still, we're not talking about a few isolated gear slots, the way we were with the Badge loot in patch 2.4. That's a complete gear set. Basically everything on any reputation vendor or 5-man dungeon loot table in the game would be turned into a placeholder that you wear while you work to farm up hundreds of badges from whatever content offers the best emblem/time returns.