We got the Potters yesterday, and today brings us the rest of Harry Potter's power trio: Hermione (Noma Dumezweni) and Ron (Paul Thornley) with their daughter Rose (Cherrelle Skeete). Like last time, Pottermore has J.K. Rowling and the actors talking a bit about the play. There's a bit more detail on the Granger-Weasleys than there were on the Potters, though. For example, Rowling says that "Ron in his forties isn't very different from Ron in his teens, except that his feet hurt a bit more". Thornley says that everything about Ron's costume is about comfort and they have picked out what they think of as Ron's "favourite" sweater for the costume.
But the biggest bit of information is about the mostly new character of Rose. Rowling said of her that "Rose is like her mother, but more secure, more grounded. She was born to wizards and knows her place in the world. Cherrelle plays her perfectly: bossy but deeply loveable."
Skeete added that Rose is "ambitious", "quite similar" to Hermione in that she puts pressure on herself, and "just wants to do the right thing".