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Highlights
- Update the bundled zlib to 1.4 for upstream security and correctness fixes, retaining SDK symbol isolation and Windows large-file support. (#1558)
- Prevent upload-preparation exceptions from stranding active uploads or blocking teardown. Release reserved records, contain cleanup failures, and preserve HTTP ownership once callbacks are registered. Regression coverage includes component and native fault-injection cases. (#1559)
Packages and compatibility
The native SDK version is 3.10.310.1. The corresponding Swift Package Manager version is 3.10.310; its tag and MATTelemetry.xcframework.zip are published by the release workflow.
The vcpkg port update is submitted separately, following microsoft/vcpkg#54888. Existing dependencies, platform transports, linkage selection, and the additive Android C API HTTP callback feature are unchanged. vcpkg continues to use its registry-provided zlib rather than the bundled copy.
C++ consumers should rebuild against this release; the SDK does not guarantee C++ ABI stability. Windows desktop support starts at Windows 10 / Windows Server 2016.
Full changelog: v3.10.309.1...v3.10.310.1