In preparation for Chapter 2 (Video premiers on the 26th) another set of updates is rolling out today for Mythic+. 

Loot Multipliers for Longer Dungeons 

• Elune - Scroll Rewards for first time completion has been adjusted slightly to be less focused on First Time completions but they still retain a bonus for doing so.
• Loot Multiplier increases EVERYTHING you receive in the Mythic+ Dungeon by a percentage.
  • Scrolls
  • Caches
  • Coins
• Not all dungeons were made with equal length, bosses and even difficulty. Some instances are harder than others and they should be more rewarding.
• These Classic Dungeons currently have a loot multiplier, based on the completion time data for these dungeons.
  • Wailing Caverns - 216% rewards.
    • As a hypothetical: if doing wailing caverns before this update at level 100 rewards you with 100 scrolls, 3 caches and 1,000 coins, doing it after the update rewards 216 scrolls. 6 caches with a chance for the 7th and 2,160 coins.
  • Shadowfang Keep - 202% rewards.
  • Blackfathom Deeps - 191% rewards.
  • Lower Blackrock Spire - 185% rewards
  • Stratholme - Service Entrance - 177% rewards
  • Blackrock Depths - Upper City - 175% rewards
  • Zul’Farrak - 163% rewards
  • Gnomeregan - 160% rewards
  • Uldaman - 160% rewards.
  • Stratholme - Main Gate - 150% rewards
  • Upper Scholomance - 146% rewards
  • Deadmines - 145% rewards
  • Dire Maul - West - 140% rewards
  • Dire Maul - East - 135% rewards
  • Razorfen Kraul - 135% rewards
  • Ragefire Chasm - 125% rewards
  • Lower Scholomance - 125% rewards
• These TBC Dungeons currently have a loot multiplier.
  • Arcatraz - 154% rewards
  • Shadow Labyrinth - 152% rewards
  • The Botanica - 148% rewards
  • Shattered Halls - 140% rewards
  • Blood Furnace - 130% rewards
  • Underbog - 123% rewards

 Scroll of Fortune updates on Elune in M+

Scroll of Fortune drops have been updated for Mythic+ to bring the rewards more in line with other mediums. Here is where you need to know:

• Scrolls of Fortune used to have a chance to roll up to a maximum amount of scrolls based on the key level that you completed.
  • However, this meant doing a level 1 and a level 40 could reward you with the same amount of scrolls and that just didn’t make sense.
• Pre-patch chapter 2 brings in a new and overhauled way of rewarding Scrolls of Fortune.
• Scrolls of Fortune now have a minimum and a maximum. 
  • The min in the max is calculated by:
    • Keystone Level
      • Even more so if the keystone is past the gear level cap, i.e. going past level 25 at the moment.
    • First Time Completion
    • NEW: Loot Multiplier

Gear Swapping in Mythic+

Also, You can now gear swap in Mythic+. With enchants no longer on your gear, the reason for this no longer exists. Swap your gear!