[docs] 4.147.0 upcoming release notes

documentation/docfx/releases/4.147.0.md

@@ -0,0 +1,59 @@
+# Version 4.147.0
+
+> **Upcoming release** · In development · Not yet available on NuGet
+
+## Highlights
+
+SkiaSharp 4.0 arrives powered by Skia milestone 147, bringing variable font rendering, color palette font support, new surface drawing APIs, and expanded platform coverage with Android Bionic and Tizen x64/arm64 targets. An interactive SkiaFiddle WebAssembly playground is now available as a live sample for experimenting with SkiaSharp code in the browser. Community contributors [@ramezgerges](https://github.com/ramezgerges), [@4Darmygeometry](https://github.com/4Darmygeometry), [@SimonvBez](https://github.com/SimonvBez), and [@Copilot](https://github.com/apps/copilot-swe-agent) drove the majority of user-facing improvements in this release.
+
+## New Features
+
+### Engine
+
+- **Skia milestone 147** — Upgrades the underlying Skia graphics engine to m147, incorporating upstream bug fixes, rendering improvements, and new capabilities from Google. ❤️ [@ramezgerges](https://github.com/ramezgerges) ([#3702](https://github.com/mono/SkiaSharp/pull/3702))
+
+### Text & Fonts
+
+- **Variable font support** — Full variable font axis support via `SKTypeface.GetVariationAxes()` and `SKTypeface.CreateWithVariation()`, enabling fine-grained control over weight, width, slant, and custom axes. ❤️ [@ramezgerges](https://github.com/ramezgerges) ([#3703](https://github.com/mono/SkiaSharp/pull/3703))
+- **Color font palette support** — Exposes palette APIs for color fonts (e.g., emoji fonts), allowing selection and customization of named palettes and individual palette entries. ([#3742](https://github.com/mono/SkiaSharp/pull/3742))
+
+### API Surface
+
+- **`SKSamplingOptions` for surface drawing** — New `SKSurface.Draw` and `SKCanvas.DrawSurface` overloads accept `SKSamplingOptions`, giving precise control over interpolation quality when compositing surfaces. ❤️ [@Copilot](https://github.com/apps/copilot-swe-agent) ([#3491](https://github.com/mono/SkiaSharp/pull/3491))
+
+### Platform
+
+- **Android Bionic library builds** — Produces native `libSkiaSharp.so` targeting Android Bionic, enabling use in NDK-based and native-heavy Android workloads. ❤️ [@4Darmygeometry](https://github.com/4Darmygeometry) ([#3217](https://github.com/mono/SkiaSharp/pull/3217))
+- **Tizen x64 and ARM64 native builds** — Adds first-class Tizen x64 and arm64 targets to the native CI and NuGet packages. ([#3620](https://github.com/mono/SkiaSharp/pull/3620))
+- **C# 13 support on legacy TFMs** — Adds PolySharp so C# 13 language features compile on older target frameworks (net462, netstandard2.0, etc.). ❤️ [@4Darmygeometry](https://github.com/4Darmygeometry) ([#3642](https://github.com/mono/SkiaSharp/pull/3642))
+- **SkiaFiddle WebAssembly sample** — An interactive browser-based playground for writing and running SkiaSharp code, built as an Uno Platform WebAssembly application. ❤️ [@ramezgerges](https://github.com/ramezgerges) ([#3762](https://github.com/mono/SkiaSharp/pull/3762), [#3790](https://github.com/mono/SkiaSharp/pull/3790))
+
+## Security
+
+- **libpng updated to 1.6.58** — Picks up recent security and bug fixes in the libpng image decoder. ([#3718](https://github.com/mono/SkiaSharp/pull/3718))
+- **libexpat updated to 2.7.5** — Picks up security and bug fixes in the Expat XML parser used by Skia. ([#3717](https://github.com/mono/SkiaSharp/pull/3717))
+
+## Bug Fixes
+
+- **SKGLView on Android not rendered in TabBar** — Fixed a regression where `SKGLView` failed to render when hosted inside an Android `TabBar` control. ❤️ [@SimonvBez](https://github.com/SimonvBez) ([#3076](https://github.com/mono/SkiaSharp/pull/3076))
+- **Default typeface resolution** — Moved default-typeface resolution to the managed layer, fixing incorrect behavior when no custom typeface was configured. ❤️ [@ramezgerges](https://github.com/ramezgerges) ([#3730](https://github.com/mono/SkiaSharp/pull/3730))
+
+## Platform Support
+
+| Platform | What's New |
+|----------|-----------|
+| 🤖 Android | Bionic library builds, `SKGLView` TabBar rendering fix |
+| 🌐 WebAssembly | SkiaFiddle interactive playground sample |
+| 🪟 Windows | libpng 1.6.58, libexpat 2.7.5 |
+| 🐧 Linux | libpng 1.6.58, libexpat 2.7.5 |
+| 🎨 Core API | Variable fonts, color font palettes, `SKSamplingOptions` overloads |
+| 🏗️ Build | Tizen x64/ARM64 targets, C# 13 on legacy TFMs, Android Bionic |
+
+## Community Contributors ❤️
+
+| Contributor | What They Did |
+|-------------|--------------|
+| [@ramezgerges](https://github.com/ramezgerges) | Skia m147 engine bump, variable font support, default typeface fix, SkiaFiddle WebAssembly playground |
+| [@4Darmygeometry](https://github.com/4Darmygeometry) | Android Bionic library builds, C# 13 support on legacy TFMs |
+| [@SimonvBez](https://github.com/SimonvBez) | Fixed `SKGLView` not rendering in Android TabBar |
+| [@Copilot](https://github.com/apps/copilot-swe-agent) | `SKSamplingOptions` overloads for `SKSurface.Draw` and `SKCanvas.DrawSurface` |

documentation/docfx/releases/TOC.yml

@@ -1,5 +1,10 @@
 - name: Overview
   href: index.md
+- name: Version 4.147.x
+  href: 4.147.0.md
+  items:
+    - name: Version 4.147.0
+      href: 4.147.0.md
 - name: Version 4.133.x
   href: 4.133.0.md
   items:

documentation/docfx/releases/index.md

@@ -4,8 +4,10 @@ Release notes for all SkiaSharp versions.
 
 ### SkiaSharp 4.x
 
+- **Version 4.147.x**
+  - [Version 4.147.0 (Upcoming)](4.147.0.md)
 - **Version 4.133.x**
-  - [Version 4.133.0 (Upcoming)](4.133.0.md)
+  - [Version 4.133.0](4.133.0.md)
 
 ### SkiaSharp 3.x