That image comes from a tweet by Sentai Filmworks that BanG Dream! 2nd Season would be getting an English dub and that tweet was November 16th of 2019 and NOW'S the first time I'm hearing about this? What what what?!
What? What? Did any of you know about this? This really has caught me off guard...
Info: Fumi is the oldest child who has a cheerful personality and voice who is born in France after her father moved to France and married Christina Beavis at the age of 20. She is childhood friends with Natsumi Heta since they have met in her 1st Year of Elementary School. She is the leader and member of an idol group "AQUA-MARINES", and is the bassist of the band "BEAVIS UNDERGROUND".
Info: Ryouko is the second child, who is a tsundere who has serious personality. She started learning piano at the age of 7, and started learning guitar at the age of 12. She is the leader, guitarist, and lead vocalist of the band "NERO CAMELLIA", and is the keyboardist of the band "BEAVIS UNDERGROUND".
Unit: Solo Unit, BEAVIS UNDERGROUND (ビーバス・アンダーグラウンド)
Info: She is the third child who has a strong-willed, stubborn, and cold-blooded personality, but never smiles this often in public. She has many acquaintances around her, but her sisters are her friends. She has a powerful singing voice. She has a solo unit, and is the guitarist, composer, and lyricist of the band "BEAVIS UNDERGROUND".
Info: Mocha is the youngest child who has a shy but cute personality. She is always kind-hearted to her sisters which she loves very much. She sometimes does not like punk fashion, but she loves pastel punk fashion the most. She is the member of the idol group "Candie♡Locks", and is the drummer of the band "BEAVIS UNDERGROUND".
Edit 1: Cocoa has a third older sister.
Edit 2: I added their pronouns and appellations.
Edit 3: Sakuya's seiyuu was changed from Yuuko Oono (大野 柚布子) to Ari Ozawa (小澤 亜李).
Edit 4: Ryouko also loves to eat ramen.
Edit 5: Fumi's seiyuu was changed from Rimi Nishimoto (西本 りみ) to Yuuka Nishio (西尾 夕香).
Edit 6: Sakuya is also cold-blooded.
Edit 7: Her first kanji name was actually Fumi (冬美).
Edit 8: Fumi and Sakuya's eyes were light blue like their mother's eyes.