You can try World of Warcraft: Forever for free, but there's a catch

You don't need a WoW subscription to try World of Warcraft: Forever for free. Check the stress test schedule and prepare for crowded servers.
Game Rant on MSN

World of Warcraft: Forever players have limited time to get free item with huge buffs

World of Warcraft: Forever has a new item that players can get for free to celebrate its release.
International Business Times

World of Warcraft: Forever surprises players with one of Blizzard’s smoothest launches

Forever debuted with minimal server problems as Blizzard introduced a realm-free system that changes how WoW Classic players connect.