Current version is 1.0.5b
If you've ever explored Blender 2.79's default workspaces, you may have tried out the "3D View Full" Workspace. Just as the name suggests, Blender was transformed into a 3D-View only layout. This was great for navigating, viewing, immersion and doing basic modeling in scenes...but not much else.
When I draw or paint, I don't put my pencils and equipment on top of my sketches, my rulers are not the focus. 3D software should be the same, editors, panels and menus should out of the way and not involved with the workspace and only appear when needed.
What is Focus?
Focus is a Blender configuration (or paradigm) for an immersive experience. Blender's amount of panels, buttons, editors and configurations are increasing, but this configuration goes right back to the foundation of what Blender was designed for; Art.
Focus should not be seen as a specific workflow, but more like clearing your desk. Get more art for less Blender with on-screen HUDs, pie menus and dynamic popups. The Toolshelf, View Properties, Viewport and Properties editor functions and many more are completely integrated into a fullscreen 3D view, no longer needing to be docked on the side.
Properties Editor, Toolshelf and View Properties 3D View integration
Substance Painter Instant Export with a custom shader with Materials popup and Substance Painter preparation tools
HDRI Asset Management
Kitbash Authoring and Asset Management with batch export functions
Modifier popups and overlays for fast operation
Modal modifiers with on-screen HUDs
Add Object HUDs and modal operators
Sculpting tool shelf 3D View integration
Advanced mesh tool integration
All viewport popups and dropdowns integrated into pie menus