Not really, but the end of the Lazarus music video suggests he's still alive, hiding.
No he meant he was dead
Going in the cupboard shows that he's just part of music history/culture now. No longer an individual with thoughts feelings or chemo, but something closer to a photo on your desk. A painting. A blackstar.
I think he's probably dead, sadly, but wouldn't be surprised if this really is a big ruse. There's a lot of evidence that it could be, certainly. I mean, despite being world famous he's good at making himself disappear and doing things in secret.
However, there's also the fact that his son and some of his closest friends posted their own messages about it which makes it doubtful that they'd lie about something like this.
the solitary candle is Bowie. Now extinguished. Despite incredible heartbreaking sadness at his death, he has orchestrated this transition as another 'change'. Shocking, surprising, but for lifelong Bowie fans this is his ultimate change to another final role - the first in so many things, the best in so many things, never to be repeated, rarely equalled. The Blackstar.
Death comes out of the closet to take Bowie.
He is lying in the hospital bed while death is slowly creeping up below him.
He is sitting at his desk while the major tom skull is staring at him, franticly trying to finish his work while death is under his desk slowly creeping up on him.
In the end he enters the closet that death came from.
He is free, just like that blue bird now.
It could have been a medically assisted suicide.
We won't know unless someone tells us.
I wouldn't put it past him, if he knew he was going to die anyway, he might have done it for art.