• Performance: run fast at low latency
• Extensibility: enable reusable components, shaders, and snippets
• Ecosystem: enable discovery and distribution of assets, components, scenes, shaders, and snippets

Check the A-Frame milestones (https://github.com/aframevr/aframe/milestones) to see what work is specifically queued for upcoming releases.

• Scene editor and inspector
• Asset discovery service
• Multi-user support