Cross Faction in Dragonflight: is it possible, how it works?

Yes, it is possible to level-up with your opposing player, besides, the Horde like the Alliance begins at the Waking Shores and you can therefore start playing together once you reach at the Dragon Isles.

 

On the other hand, it will be impossible for you to run dungeons in difficulty: Normal, Heroic or even Skirmishes arena. On the other hand, you can go directly in front of the dungeon to do it in a group.

 

It will also be possible for you to simultaneously collect the many Dracoglyphs scattered all over the Isles.

 

Cross-faction guilds are still not available, but the developers remain open to the idea. You will also be able to do the Vault of the Incarnates Raid in Mythic difficulty, provided that at least 16 of the players are in the same faction and in the same guild, allowing a maximum of 4 players to be of the opposite faction.

 

You will still be able to do the Mythic+ as well as the cross-faction raid as soon as they become available when the first season of Dragonflight launches.