You will still have the legendaries that you got from legion and when you start Battle for Azeroth (BFA), the legendaries will be weaker and weaker for each level up.
The level cap in BFA is 120 and when you are around 118, then your legendaries are more or less totally worthless.
BUT the secondary stats are still good, so keep the legendaries until you get better secondary stats.
- Dragonflight: Major Factions Overview
- Gear item level (ilvl) in Dragonflight
- New Mythic+ ilvl gear reward: +18 instead of +15
- Dragonflight Keystone Master: Season 1 reward
- The Dragonflight Glory Dungeon Achievement reward
- The Dragonflight Glory Raid Achievement reward
- Raid testing this week
- Dragonflight Beta Development Notes - Phase 6
- How to farm Artisan´s Mettle - Dragonflight Guide
- Dragon Isles Knowledge Points - Profession GUIDE