Project Reunion is a set of libraries, frameworks, components, and tools that you can use in your apps to access powerful Windows platform functionality from all kinds of apps on many versions of Windows.
The roadmap for Project Reunion supports the primary goals of breaking down the barriers between Win32 and UWP and making the Windows developer platform more agile, compatible, modern and open.
For a general overview, see the readme and FAQ.
Here's how we intend to roll out Project Reunion. To subscribe to updates, subscribe to this discussion. (all times/features/releases are tentative and subject to change):
As a packaged MSIX desktop app (WPF, WinForms, Win32, console), here's what and when you (tentatively) can expect from Project Reunion!
| 🌟 | Reunion 0.5 (Q1 2021) | Reunion 0.8 (Q2 2021) | Reunion 1.0 (Q4 2021) |
|---|---|---|---|
| WinUI | ✅ Supported | ✅ Supported | ✅ Supported |
| DWriteCore | ✅ Supported | ✅ Supported | ✅ Supported |
| MRT Core | ✅ Supported | ✅ Supported | ✅ Supported |
| App Lifecycle APIs | ❌ Not Supported | 🔄 Preview | ✅ Supported |
| Power State Notifications | ❌ Not Supported | 🔄 Preview | ✅ Supported |
| Windowing | ❌ Not Supported | ❌ Not Supported | ✅ Supported |
| Deploy Options: | |||
| • In-app | ✅ Supported | ✅ Supported | ✅ Supported |
| • Fx Package | ✅ Supported | ✅ Supported | ✅ Supported |
As an unpackaged desktop app (WPF, WinForms, Win32, or console, not using MSIX), here's what and when you (tentatively) can expect from Project Reunion!
| 🌟 | Reunion 0.5 (Q1 2021) | Reunion 0.8 (Q2 2021) | Reunion 1.0 (Q4 2021) |
|---|---|---|---|
| WinUI | ❌ Not Supported | ❌ Not Supported | ✅ Supported |
| DWriteCore | ❌ Not Supported | 🔄 Preview | ✅ Supported |
| MRT Core | ❌ Not Supported | 🔄 Preview | ✅ Supported |
| App Lifecycle APIs | ❌ Not Supported | 🔄 Preview | ✅ Supported |
| Power State Notifications | ❌ Not Supported | 🔄 Preview | ✅ Supported |
| Windowing | ❌ Not Supported | ❌ Not Supported | ✅ Supported |
| Deploy Options: | |||
| • In-app | ❌ Not Supported | 🔄 Preview | ✅ Supported |
| • Fx Package | ❌ Not Supported | 🔄 Preview | ✅ Supported |
The Windows platform team is currently focused on the four primary areas below for Project Reunion.
This isn't an exhaustive list: it's a sampling of some of the key infrastructure work we're doing to break down the barriers between Win32 and UWP and decouple the platform from the OS, plus some of the new functionality we're adding to enable new app capabilities and address top developer issues.
- WinUI 3 - the Windows 10 native UI platform for Win32 and UWP
- WebView2 - embedding web content in Windows apps using the new Edge (Chromium) engine
- React Native Windows - now targeting WinUI
- Modern Windowing
- Touch, inking, display improvements
- ARM64 support
- Input
- Better options for app lifecycle management and power usage
- DirectWrite text rendering platform
- Local and Push Notifications
- Background Tasks
- Enhanced app packaging
- Framework package deployment
- Auto upate for all app types
-
Decoupling the Windows platform from the OS
- faster updates that you can start using on day 1
-
Ensuring features work on all supported Windows versions
- initial min OS version = 1809
- polyfilling features as needed
- supporting both Win32 and UWP
-
Moving engineering to GitHub
In the future, you can expect multiple releases per year from the Project Reunion team. We will continue to improve app compatibility and deliver new capabilities.