Summary & Key Takeaways ​

• A new component testing model is introduced, utilizing stories and galleries.
• The fixtures.mount() fixture now mounts stories by ID and returns a scoped locator.
• Most Playwright operations and web-first assertions now accept an AbortSignal for cancellation.
• Screenshot assertions (toHaveScreenshot()) and standalone screenshots (page.screenshot()) support the WebP format.
• WebP screenshots can be lossless or lossy, allowing for quality-size trade-offs.

Our Commentary ​

Playwright just keeps delivering. The new component testing model sounds like a huge step towards more integrated and efficient UI testing. And AbortSignal support? That's a game-changer for handling flaky tests or long-running operations gracefully. We've been waiting for better screenshot formats too, so WebP is a welcome addition. This release feels incredibly polished.