Nothing's set in stone, so a few ideas:

• M2 - M3 toggle
• new or updated for m3 indicator for relevant components
• Links to M3 spec
• color / typography demos updates
  • de-emphasizing predefined colors, emphasizing ColorScheme.fromSeed
• integration with dynamic_color
• new, fully M3 study (https://github.com/material-foundation/pesto_flutter)

Additionally,

• links from material library can link to specific demos