'I think we're a couple of years before we'll really see that hit mainstream.'
Spencer became head of Xbox in 2014 and immediately focused the console back onto gaming.
The Xbox Elite Controller was unveiled during Microsoft's E3 2015 press conference and launched in October 2015.
Microsoft's E3 showing wasn't as crowd-pleasing as Sony's, but it was smarter.
Slim-line model supports 4K Blu-ray and video streaming, HDR and has a 40% smaller chassis.
From Xbox One Slim to Gears of War 4, Dead Rising 4 to Oculus Rift.
The company has also said that the first multi-disc game added to the catalogue was Deus Ex: Human Revolution Director's Cut
The event will focus on 'the newest games, tech and features coming to Xbox One and Windows 10'.
Phil Spencer announces news in blog post.
Rumours ramp up following recent evidence that Sony is working on a PS4 update.
Gears of War 4 sure to feature at 2016 Xbox press conference.
'I'm not a big fan of Xbox One and a half. If we're going to move forward, I want to move forward in big numbers,' Spencer said.
Microsoft is finally making good on its promise of opening up the Xbox one to developers.
Women platform dancers in skimpy schoolgirl outfits paid to socialise with guests during Xbox party.
The dream of PS4, Xbox One and PC players playing together could soon become a reality.
Head of Xbox division slams flag-bearing fanboy on Twitter.
Xbox One unlikely to be Microsoft's last gaming console, Phil Spencer says.
Microsoft looking for a way to sell 360 games on Xbox One.
"I fully expect they will drop price," says Spencer in an interview.
Xbox boss wants Bungie's final Halo on Xbox One.
Making it easy to watch competitive Halo will be as important as making the series an eSports favourite.
Xbox boss talks about strengthening the Xbox brand.