And look how well that went 
The race is wide open at this point, but Dua Lipa is not my cup of tea; nasal, monotone voice, seems to use a fair bit of voice correction and her music is very anodyne and generic.
That’s just my opinion, though!
Personally i’d like to see Muse finally get a crack at it - their track Supremacy was rumoured to be a potential Skyfall theme at one point, had they not had the bad luck of competing with Adele.