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    • Require modern C++ language feature use
    • Minimum supported VTK version: 9.1
    • Remove support for ITKv4 interfaces
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    • Prefer standard CXX language features rather than ITK macros
    • Removed ITKv5 migration/maintenance scripts
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    • Class changes
    • ITKFEM and ITKFEMRegistration modules removed
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    • RenyiEntropyThresholdCalculator/MaximumEntropyThresholdCalculator: max-entropy seed corrected
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    • ITK v5 Migration Guide
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    • JointHistogramMutualInformation Metric Correction — Downstream Impact
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