eslint-plugin-vue should be change to support <script setup> and <style> variable injection.
I will list the work needed to support these on this issue.

These features were released as experimental features in Vue.js 3.0.
So I think that the inclusion or not of the changes listed here will not affect the release of eslint-plugin-vue 7.0.0.

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Core

• Change the parser to parse multiple <script> blocks. (issue Supports for <script setup> and <style> variable injection vue-eslint-parser#78)
• Change the parser to parse <style vars="...">. (issue Supports for <script setup> and <style> variable injection vue-eslint-parser#78)
• Change the parser to parse <script setup="...">. (issue Supports for <script setup> and <style> variable injection vue-eslint-parser#78)
• more

Rules

• Add vue/valid-define-props rule #1560 Add no-refer-vars-script-setup-define-props rule that disallows referencing variables in defineProps() of <script setup>.
• Add vue/valid-define-emits rule #1561 Add no-refer-vars-script-setup-define-emit rule that disallows referencing variables in defineEmit() of <script setup>.
• Add vue/no-export-in-script-setup rule #1559 Add no-export-in-script-setup rule that disallows ES export in <script setup>.
• Change no-parsing-error rule to reports parsing errors in <script setup="...">.
• Change no-parsing-error rule to reports parsing errors in <style vars="...">.
• Add valid-script-setup rule that checks whether <script setup="..."> is valid arguments.
• Add valid-style-vars rule that checks whether <style vars="..."> is valid expression.
• Add no-vars-setup-export-default rule that disallows referencing variables in export default of <script setup>.
• more

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vuejs/rfcs#227
https://github.com/vuejs/rfcs/blob/script-setup-2/active-rfcs/0000-script-setup.md
vuejs/rfcs#231
https://github.com/vuejs/rfcs/blob/style-vars-2/active-rfcs/0000-sfc-style-variables.md

https://github.com/vuejs/rfcs/blob/sfc-improvements/active-rfcs/0000-sfc-script-setup.md
https://github.com/vuejs/rfcs/blob/sfc-improvements/active-rfcs/0000-sfc-style-variables.md