Mac Miller's latest project, Macadelic, dropped just moments ago. Its release was narrowly preceded by the release of a new video for the track "Loud," and the cover and overall feel of the project seem to echo a sentiment similar to that in the video. Mac Miller is no longer living in the Best Day[s] Ever. His life has changed radically over the last year, and the aesthetic of his music and his brand are reflecting that.
It's hard to tell whether this is a conscious effort by Miller, or just some kind of natural artistic progression. Probably a little of both. This Mac Miller is someone who's wholly comfortable with his fame and success, rather than shying away from it for the sake of maintaining a boyish persona. How will his fans feel about this transformation? That remains to be seen.