Libraries and runtime updates in .NET 9 Preview 3

[richlander]

.NET 9 Preview 3 includes several new library and runtime features.

Libraries:

• Enhancements to the Tokenizers Library
• TimeSpan.From overloads
• Added PersistableAssemblyBuilder type in System.Reflection.Emit

See detailed library release notes.

Runtime:

• Faster exception handling
• Inlining Improvements: Shared Generics with Runtime Lookups

See detailed runtime release notes.

.NET 9 Preview 3:

• Discussion
• Release notes
• What's new in .NET 9 documentation