1206 - 布兰特 - Brant
1406 - 漂泊者·气动 - Rover-Aero
1407- 夏空 - ???
1408 - 卡提希娅 - Cartethyia
1506 - 菲比 - Phoebe
1507 - 赞妮 - Zani
1607 - 坎特蕾拉 - Cantarella

Source: Team Gemberry78

overview of all the new Echoes from update 2.0

Source: Sleep/Stormy Waves

Wuthering Waves 2.0 Echo Size Comparison

The new QoL update in Wuthering Waves 2.0: Newly obtained Echoes now come with level 5 already unlocked. This allows you to use newly farmed Echoes to level up your other Echoes, but you'll still need to farm Tuners to do so. [Data Bank 24 Required?]

Source: Sleep

【 Wuthering Waves 】

夏空 - Ciaccona ( 5 Star, Female & Aero )
Will release in version 2.3 along with Zani.
Elf ears. Red hair. Violin.

Source: Stepleaker

Hakush.in 2.0.2 update for WW
Carlotta: 2.0.0 / 2.0.2 (Current)
Roccia: 2.0.0 / 2.0.2 (Current)

Roccia changed

Some Resonance skill DMG is considered to be changed to heavy DMG
And her weapon is also skill to heavy

Source: Zani Oppai