her management would never let her play a non album single the week before album release on one of the uk's biggest radio stations, it makes 0 promotional sense
if there is a new song, it is 99% certain to be from the album, otherwise it'll just be a&w or tunnel
she'll probably announce something during the interview if there is anything
the crackpot theories are making me giggle though
p.s. isn't it also possible that boz's favourite song off the album is being released officially? and it technically is new music for us, and hes just excited about it?