Sketch now has layers support. That means multiple drawing or image layers and the ability to rename, restack, transform and merge them.
Also in this update:
Enhanced brush settings: The ability to control how brushes respond to things like pressure and velocity
New brushes: Thick Acrylic, Ink Brush and Soft Pastel brushes better simulate real-world tools
A new edit mode: The ability to duplicate projects and move drawings between projects
Optimization for 3D Touch: Quick-action shortcuts like long-pressing the app and having it open to your most recent work and more control with finger-tip drawing.
Read about it here: Adobe Photoshop Sketch on the App Store or just update the app and let us know what you think.
Thank you so much Adobe!