Microsoft is taking the Lumia Camera code as the base for the new camera app, including its faster load times, and putting it right into Windows 10. This means that HTC and Samsung devices will soon get those cool manual controls, and new simpler UI found in Lumia Camera 5.0. It should be a part of the upcoming preview next month.
Finally, there was one big change to the demo we saw tonight. Previously, when you tapped the little photo icon in the upper left corner, it launched into a photo history instead of the formal Photos app on Windows Phone. In Windows 10, this changes. Now, that button takes you into the newly announced Photos app experience directly. It's a small but smart change.