World of Warcraft has recently told us when Shadowlands is finally going to launch. That time is October 27th 2020 worldwide, vastly earlier then many people thought. They dropped this information this year at the virtual Gamescon Expo. See the release trailer below. As for the creation of the Shadowlands world it looks like the Warcraft Development team has stepped up the rendering of the character models and worlds to help make it more immersive.
The raid will unlock November 10th with Normal and Heroic Difficulties and the Mythic raid will be open the week the following week with raid finder. The Mythic dungeons (and my favorite part) the keystone season 1 will unlock on November 10th with the raid.
Even though the World of Warcraft Shadowlands launch is 2 months away, this only gives players about 2 weeks to complete all the achievements in Battle for Azeroth before prepatch occurs. They will be removing the wisdom buff, and also all Raid and Mythic+ achievements.