Microsoft and Uno Platform have released SkiaSharp 4.x stable versions (4.148.0 and 4.150.0), with a 4.151.0 prerelease also available. The new major version aligns package versioning with upstream Skia milestones tracked by Chrome release channels. Key additions include OpenType variable-font axis control, animated WebP encoding, zero-copy text-shaping APIs, graphics diagnostics filters, and managed-code performance improvements (P/Invoke reduction, pooled HarfBuzz buffers, allocation-free span overloads). GPU rendering showed up to 24% improvement in shadow-heavy scenes, while CPU Perlin-noise shaders are ~6x faster. SkiaSharp 4 is a breaking upgrade from v3, requiring migration from deprecated SKPaint text APIs to SKFont, and removing the .NET Interactive integration package.
