Impact Score: 5/10
Tailwind CSS v3.1.5 β Release Notes & Engineering Impact
Source available β automated, not human-reviewed
Component: tailwind Β· Channel: stable. Automated analysis, not a compatibility certification. How this works.
Analysis updated: 2026-11-01.
β‘ Executive Summary (TL;DR)
Tailwind CSS v3.1.5. Source highlight: Support configuring a default `font-weight` for each font size utility (#8763)
Who Does This Impact? (Role-Based Analysis)
π» Software Engineers & Devs
Check the source notes against the package and APIs you use before upgrading.
π Product & Engineering Leads
Use the documented changes to assess relevance to your product; release frequency alone is not a quality measure.
βοΈ DevOps & Security
Verify the target version, runtime requirements and rollback procedure in the official documentation.
β¨ New Features & Capabilities (2)
- Support configuring a default `font-weight` for each font size utility (#8763)
- Add support for alpha values in safe list (#8774)
π§ Bug Fixes & Patches (5)
- Improve types to support fallback values in the CSS-in-JS syntax used in plugin APIs (#8762)
- Support including `tailwindcss` and `autoprefixer` in `postcss.config.js` in standalone CLI (#8769)
- Fix using special-characters as prefixes (#8772)
- Donβt prefix classes used within arbitrary variants (#8773)
- Add more explicit types for the default theme (#8780)
π View Raw Release Notes (Original Developer Log)
### Added
- Support configuring a default `font-weight` for each font size utility ([#8763](https://github.com/tailwindlabs/tailwindcss/pull/8763))
- Add support for alpha values in safe list ([#8774](https://github.com/tailwindlabs/tailwindcss/pull/8774))
### Fixed
- Improve types to support fallback values in the CSS-in-JS syntax used in plugin APIs ([#8762](https://github.com/tailwindlabs/tailwindcss/pull/8762))
- Support including `tailwindcss` and `autoprefixer` in `postcss.config.js` in standalone CLI ([#8769](https://github.com/tailwindlabs/tailwindcss/pull/8769))
- Fix using special-characters as prefixes ([#8772](https://github.com/tailwindlabs/tailwindcss/pull/8772))
- Donβt prefix classes used within arbitrary variants ([#8773](https://github.com/tailwindlabs/tailwindcss/pull/8773))
- Add more explicit types for the default theme ([#8780](https://github.com/tailwindlabs/tailwindcss/pull/8780))