Classic Plus Beta Update: Major Bug Fixes, Class Changes, and Dungeon XP Balance
With Classic Plus launching in just 26 days, the latest blue post delivers a large number of updates, bug fixes, and balance changes. The build focuses on improving gameplay systems, correcting class mechanics, refining quests, and creating a healthier balance between dungeon leveling and questing.
https://www.mmoexp.com/Wow-forever/Gold.html

MMOEXP WoW Forever Explained: Why Blizzard Is Rebuilding Classic WoW Without Raising the Level Cap
https://www.mmoexp.com/Wow-forever/Gold.html
Summary
WoW Forever is more than an upgraded Classic WoW server. Blizzard is building a new permanent version of Azeroth around the original level 1–60 journey, while adding new quests, dungeons, items, professions, class updates and long-term progression. The biggest difference is that the level cap will stay at 60, allowing Blizzard to expand the world horizontally instead of replacing old content with every major update.