1,498 junk miscellaneous items
The Forever catalog holds 1,498 junk miscellaneous items, topping out at item level 10 with Explorer's Soul, Human Orphan Whistle, Orcish Orphan Whistle. Mounts, companions, junk, and everything the game files nowhere else, Classic Era and Forever alike.
Source: World of Warcraft: Forever game data and Blizzard's Game Data API. Updated with each game build.