Just to point it out, Maleficent does fly in the original film. She flies from her tower to the front of King Stefan's castle before turning into the dragon. Now she doesn't quite stay in her human form, rather, turning into a shooting fire-work type thing, but it stands to reason that she can fly.
Yes, I was thinking about that earlier when I first saw the photos.
As for the three fairies, I just did a little reading online and apparently the final casting is Imelda Staunton and Lesley Manville as Flittle and Knotgrass (not sure which way round though) and Juno Temple as the third fairy, Thistletwit.
Assuming that the fairies are still based on the 1959 film version, it makes sense to have two older women and a younger woman, making Juno Temple "Merryweather". I never imagined Merryweather to be quite that young though, although this IS a prequel/backstory type of film so I guess it could make sense. The article that I read stated that the three women were playing the fairies who took Aurora into the forest to raise her and protect her from Maleficent though, so it makes sense.
I just cannot understand the reason for the name changes though. Oh well, a lot can happen in the next year and a half. Maybe the original names just didn't suit this new take on the story. Once it's still the same characters though I guess I don't mind.
Is King "Henry" actually King Hubert too? it seems to fit and wouldn't be too drastic a change. Can't wait for more updates on the story though!