What changed
Painted art of two warriors brawling
Official art from Blizzard's Unbowed short story. Image \u00a9 Blizzard Entertainment, Inc. Source: news.blizzard.com.

Is WoW Forever cross-faction?

Short answer: ❌ No. Horde and Alliance can't group, and you also can't group across rulesets. Pick both with your friends before you roll.

With the other faction or ruleset Allowed?
Group, quest, dungeon or raid with the other faction ❌ No
Join a guild with the other faction ❌ No (same ruleset and faction only)
Group with someone on another ruleset ❌ No
Battlegrounds with players from other rulesets ✅ Yes, except Hardcore
Both factions on one account ✅ Normal, RP, Hardcore · ❌ PvP
Players fighting in a snowy forest
Official WoW Forever PvP screenshot. Image © Blizzard Entertainment, Inc. Source: news.blizzard.com.

What Blizzard says

Blizzard's ruleset article keeps the factions apart to preserve the "war" in Warcraft. Its starter guide adds that you can group, join guilds, run dungeons and raid only with players on the same ruleset and faction.

The one mixing point is battlegrounds: they can pull players from different rulesets (not Hardcore), but it's still Horde against Alliance.

The PvP ruleset faction lock

A Horde outpost with a red-roofed hut
Official WoW Forever screenshot. Image © Blizzard Entertainment, Inc. Source: news.blizzard.com.

Before you roll with friends

  1. Same region. Region and account setup
  2. Same ruleset. Changing later means a new character. Character transfers
  3. Same faction.

More: rulesets explained

Sources
  • Blizzard: Choose Your Ruleset (updated 22 Oct)
  • Blizzard: New Player's Starter Guide for WoW Forever