Things to Do Before Shadowlands Goes Live (BfA 8.3)

Assemble a group and defeat N'Zoth the Corruptor in Ny'alotha on Heroic difficulty. Uncorrupted Voidwing will become unobtainable when the Shadowlands expansion goes live.

If you want to obtain the Awakened Mindborer mount, you must earn Battle for Azeroth Keystone Master: Season Four before the release of Shadowlands. To do this, you must complete all Battle for Azeroth Season 4 dungeons at Mythic Level 15 or higher, within the time limit.

If you cannot get the mount, you can at least try getting the Awakened title, which is easier to get. You need to complete all Battle for Azeroth Season 4 dungeons at Mythic Level 10 or higher within the time limit ( Battle for Azeroth Keystone Conqueror: Season Four).

Certain Essences tied to Battle for Azeroth Mythic Season 4 will become unattainable when the Season ends, making it impossible to earn the Phenomenal Cosmic Power achievement and the Azeroth's Champion title.

Mad World requires you to complete all objectives in the Horrific Visions of Stormwind and Orgrimmar in a single visit while not in a party and with all 5 Faceless Masks active. The achievement rewards "the Faceless One" title and it is going away in the Shadowlands pre-patch.

Blizzard will remove the Reins of the Mighty Caravan Brutosaur mount in the Shadowlands pre-patch from the vendor, so now is the ideal time to start making some serious gold if you want to get the mount and the Conspicuous Consumption (Feat of Strength) achievement.

You will still be able to get the mount from the Black Market Auction House, but expect prices to go up when it becomes rarer to get.

Blizzard made Jaina and N'Zoth the Corruptor drop two Glacial Tidestorms and Ny'alotha Allseers on Mythic difficulty until the release of Shadowlands. When the expansion goes live, both mounts will have their drop chance drastically reduced to around 1%.

The Elite Notorious Gladiator's Armor appearances are gated behind reaching various ranks in the ongoing PvP Season 4 and they are going away when the Season ends.

The Duelist: Battle for Azeroth Season 4 rank (2,100+ Skill Rating) is required in PvP if you want to earn every single piece of armor, including the cloak.

Both Demon Hunters and Death Knights start at Level 10 in the Shadowlands pre-patch, instead of 98 and 55 respectively, so it is better to level them up now.

All races including Allied Races can roll Death Knights in Shadowlands. This feature is unlocked immediately if you pre-order Shadowlands.

The Conqueror of Azeroth and Servant of N'Zoth achievements will be harder to get when the current content becomes played by fewer players in Shadowlands. Therefore, it is best to consider completing said achievements before Shadowlands.