Massive Dragonflight Season 4 Mythic+ Dungeon Tuning - Checkpoint Added in Halls of Infusion

wowhead.com:

Blizzard has done a massive amount of Dragonflight Season 4 Mythic+ dungeon tuning which includes added a checkpoint in Halls of Infusion!

Dragonflight: Season 4 Update Development Notes

• Season 4 brings back all eight Dragonflight dungeons to the Mythic+ rotation: Ruby Life Pools, Brackenhide Hollow, The Nokhud Offensive, Uldaman: Legacy of Tyr, Neltharus, The Azure Vault, Halls of Infusion, and Algeth’ar Academy.
• DIFFICULTY CHANGES
  
  One of the most notable changes players can look forward to is the removal of the timer for Mythic Keystone dungeons for what are currently 0 and 10. Players can run through these dungeons at their own pace without the need to watch the clock while still honing their skills.
• Heroic difficulty and rewards will move up to roughly the current level of Mythic 0. These dungeons will remain available to queue into via Group Finder (default hotkey: “I”), though the item level requirement to queue will also go up accordingly.
• Mythic 0 difficulty and rewards will move up to roughly the current level of Mythic 8-10 (this is a bit hand-wavy — numerically it’s close to M10 but not having a timer at all or affixes really offsets that quite a bit).
• The existing Mythic+ system will pick up where that leaves off, such that a Mythic 5 in Season 4 is roughly equivalent in difficulty, rewards, and M+ Rating awarded, to a Mythic 15 today.
  
  Normal
  
  This difficulty is unchanged.

• The tuning and rewards of this difficulty are increasing to be equivalent to a baseline Mythic (Mythic 0) dungeon in the current system.
• Mythic difficulty changes and mechanics will not be present in this difficulty.
• This remains a queueable experience.

• The tuning and rewards of this difficulty are increasing to the equivalent of a +10 dungeon with affixes in the current system.
• There are no timers, affixes, or limitations