# React Chrono 3.3.0

- Product: React Chrono (https://whatsnew.fyi/product/react-chrono)
- Vendor: Prabhu Murthy
- Date: 2025-11-25
- Version: 3.3.0
- Original notes: https://github.com/prabhuignoto/react-chrono/releases/tag/3.3.0
- Permalink: https://whatsnew.fyi/product/react-chrono/releases/3.3.0

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **added** — Add read more/expand functionality to ContentDisplay component with overflow detection
- **added** — Add theme and line width customization for horizontal timeline
- **changed** — Enhance dynamic item updates with improved state preservation and scroll position tracking
- **changed** — Improve dark mode synchronization in TimelineContextProvider
- **changed** — Refactor design token system to consolidate semantic tokens and deprecate legacy imports
- **changed** — Improve focus behavior in timeline component with better initial render handling
- **changed** — Update CSS styles for media details expanded and minimized states
- **changed** — Enhance timeline card styles and nested timeline layout
- **changed** — Optimize component re-renders with memoization and useCallback
- **fixed** — Fix custom elements in left content
- **fixed** — Fix item update handling to differentiate between appends and replacements

###### Features
- Add read more/expand functionality to ContentDisplay component with overflow detection
- Enhance dynamic item updates with improved state preservation and scroll position tracking
- Add theme and line width customization for horizontal timeline
- Improve dark mode synchronization in TimelineContextProvider

###### Improvements
- Refactor design token system: consolidate semantic tokens, deprecate legacy imports
- Improve focus behavior in timeline component with better initial render handling
- Update CSS styles for media details expanded/minimized states
- Enhance timeline card styles and nested timeline layout
- Optimize component re-renders with memoization and useCallback

###### Bug Fixes
- Fix custom elements in left content (Fixes #520)
- Fix item update handling to differentiate between appends and replacements