# API Difference 9.0-preview4 vs 9.0-preview5

API listing follows standard diff formatting.
Lines preceded by a '+' are additions and a '-' indicates removal.

* [System](9.0-preview5_System.md)
* [System.Collections.Frozen](9.0-preview5_System.Collections.Frozen.md)
* [System.ComponentModel](9.0-preview5_System.ComponentModel.md)
* [System.Diagnostics](9.0-preview5_System.Diagnostics.md)
`* [System.IO.Pipelines](9.0-preview5_System.IO.Pipelines.md)
* [System.Numerics](9.0-preview5_System.Numerics.md)
* [System.Reflection](9.0-preview5_System.Reflection.md)
* [System.Reflection.Metadata](9.0-preview5_System.Reflection.Metadata.md)
* [System.Runtime.CompilerServices](9.0-preview5_System.Runtime.CompilerServices.md)
* [System.Runtime.InteropServices](9.0-preview5_System.Runtime.InteropServices.md)
* [System.Runtime.Intrinsics](9.0-preview5_System.Runtime.Intrinsics.md)
* [System.Runtime.Intrinsics.Arm](9.0-preview5_System.Runtime.Intrinsics.Arm.md)
* [System.Text.Json](9.0-preview5_System.Text.Json.md)
* [System.Text.Json.Serialization](9.0-preview5_System.Text.Json.Serialization.md)
* [System.Text.Json.Serialization.Metadata](9.0-preview5_System.Text.Json.Serialization.Metadata.md)

