Features of version 1.0 include:
Content Cleaner: Used to replace HTML tags with corresponding AMP components, implement optimizations and provide validation information to plugin compatibility tools.
Compatibility Tools: Helps you develop your AMP experience with AMP debugging by providing extensive and detailed information about possible validation errors, the tags/scripts that caused them, and specific components on your site.
CSS Tree Shaking: Assists in tidying up CSS internal code in cases where existing CSS rules exceed the maximum allowed for a single AMP page.
Core theme support: Enable full AMP validity for the four default themes (ie 2015, 2016, 2017, 2019).
Gutenberg Integration: Fully integrate AMP content creation with Gutenberg, the powerful new editing experience in WordPress.
Native AMP Experience Support: Enable a site-wide AMP experience without sacrificing platform flexibility or content fidelity.
Code improvements: From customization flexibility to better UI flow, internationalization, accessibility and more. Please check the full list in this article.
Opt-in/opt-out support : All features are opt-in. Opt-in users can choose to enable AMP only in specific areas of their site, or disable AMP at a granular level (for example, within individual posts).
Compatibility Enforcement: Make sure the site remains AMP compliant and only serves AMP valid content.