Blender Developers Meeting Notes: September 21, 2020

Announcements
- 2.90.1 planned for Wednesday September 23, 2020.
- The fixes are already ported.
- For any showstopper contact Jeroen Bakker directly on #blender-coders .
- USD NVidia kick-off meeting
- ASAN is now supported for macOS developers
- Tuesday Talks – modules to pre-fill this week’s upcoming notes .
New Features and Changes
Blender 2.91
User Interface
- Properties Editor (notes ) (video :cinema: ) ( Hans Goudey )
- Search through properties in the properties editor, automatically expanding and collapsing panels. Ctrl-F starts a search, and alt-F clears the search field.
- Outliner (notes ) (video :cinema: ) ( Nathan Craddock )
- Object collections now have a color tag, set from the right-click menu.
- Drag & drop for modifiers, constraints and grease pencil effects.
- NLA Editor ( Wayde Moss )
- Always show all strips, also in tweak mode. (commit )
Modeling
- Sculpt ( Pablo Dobarro )
- Curves ( Hans Goudey )
- Allow caps for all geometry types (commit )
- Add custom profile bevel support (commit ) (video :cinema: )
- Meshes:
- Unify all XYZ symmetry options across modes. (commit ) ( Pablo Dobarro )
- UVs:
- Select face loops when in face-select mode (commit ) ( Campbell Barton )
Viewport
- 3D Viewport ( Pablo Dobarro )
- Fluid simulation ( Sriharsha Kotcharlakot )
- Add various visualization options. (commit )
Rendering
- Eevee ( Clément Foucault )
- GGX multi-scatter distribution for glossy reflections, improving energy conservation.(commit )
- Grease Pencil ( Antonio Vazquez )
- Add holdout materials (commit )
- Shaders ( Alex Strand )
- Add emission strength input to Principled BSDF node (commit )
Animation
- Constraints ( Chris Clyne )
- Action Constraint: Add manual time factor input control (commit )
- Overrides ( Bastien Montagne )
- Support inserting items in collections created by Python add-ons. (commit )
