New web platform features
New platform features:
- Support for the Brotli compressed data format (on by default) as an HTTP content-encoding method
- Support for the Payment Request DOM API (on by default). Note that some components of the Microsoft Wallet user experience are not fully functional in this release. See also the Payment Request Developer Guide
- Support for the individual transform syntax for CSS transforms (behind a flag)
- Updated the MS-prefixed FIDO 2.0 implementation to match the latest W3C Web Authentication specification
- Partial support for CSS Custom Properties (aka CSS Variables)
- Preliminary support for the IntersectionObserver API
- Core platform support for Fetch abstraction (behind a flag)
- Async/await is on by default (previously behind a flag)
- DOM performance improvements
- Console filter settings will persist for buttons and context menu.
- Improved ES6 Modules debugging experience
- Fixed an issue that prevented attaching the F12 Developer Tools to Windows web apps
Known issues in build
- Some websites, including Google properties, may unexpectedly show “We can’t reach this page,” due to issues with an experimental implementation of the new Token Binding security model which is being previewed in Windows Insider builds. We are working on fixes for these issues. In the meantime, you can work around this issue by accessing the site from an InPrivate tab. This issue is fixed in builds 15025 and earlier, which are available in the Insider Fast ring.