As far as I know, it's still a musical. One of Disney's casting challenges was finding a young man of Middle Eastern/South Asian descent who could act and sing. (Although I don't know why they couldn't dub his singing voice; after all, that's what happened in the 1992 animated movie.)
While promoting his recent ''King Arthur'' movie in May, director Guy Ritchie said: ''I think it'd be tough not to make ['Aladdin'] a musical. It's too early, because I've really just immersed myself into that project. So, I'm still looking for cast members ...''
This Variety report characterizes Mena Massoud as a ''relative newcomer,'' but his IMDB screen credits go back to 2011. He's had a recurring role in three TV shows, and he'll be co-starring with Jack Krasinski in Amazon's upcoming ''Jack Ryan'' series.