Version 2 (Current Major Version)

• Svelte Support:
  • Support for Svelte 3 and 4
  • Experimental support for Svelte 5
• ESLint Support:
  • Targeting ESLint v7 and above
• Node.js Support:
  • Requires Node.js v14.17 and above

Version 3 (Work in Progress)

• Svelte Support:
  • Continued support for Svelte 3 and 4
  • Full (non-experimental) support for Svelte 5
• ESLint Support:
  • Requires ESLint v8.57.1 or above (feat!: drop support for old eslint #937)
• Node.js Support:
  • Requires Node.js v18.20.4 or above (feat!: drop support for old node versions (<18, 19, 21) #885)
• Update versioning policy (chore: update README regarding versioning policy #964)
• Configurations:
  • Update recommended config
    • feat: add control for executing rules based on Svelte/SvelteKit context #980
    • Rule deprecation request #894
    • chore!: update recommended config #1033
• Respect warningFilter setting from Svelte 5 (Respect warningFilter setting from Svelte 5 #905)
• Update README (chore: update README for v3 #1041)

And issues which has v3 label.
https://github.com/sveltejs/eslint-plugin-svelte/milestone/1

Version 4 (In Planning)

• Svelte Support:
  • Continued support for Svelte 3 and 4
  • Enhanced rules and integrations for Svelte 5
• ESLint Support:
  • Targeting ESLint v9 and above
• Node.js Support:
  • Requires Node.js v18.20.4 or above
• Rule Improvements:
  • Strengthen and refine rules for Svelte 5-specific features
  • Potential migration guides and rule deprecation notices for older Svelte versions