Update README.md (#259)

Author: progrium

README.md

@@ -9,7 +9,7 @@ Native Apple APIs for Golang!
 <a href="https://github.com/sponsors/progrium" title="Sponsor Project"><img src="https://img.shields.io/static/v1?label=sponsor&message=%E2%9D%A4&logo=GitHub" alt="Sponsor Project" /></a>
 
 > [!IMPORTANT]
-> Aug 23, 2023: **MacDriver is becoming DarwinKit with the [0.5.0-preview](https://github.com/progrium/macdriver/releases/tag/v0.5.0-preview) release now available!** The [legacy branch](https://github.com/progrium/macdriver/tree/legacy) and [previous releases](https://github.com/progrium/macdriver/releases) are still available for existing code to work against. Help me reach the [0.5.0 release milestone](https://github.com/progrium/macdriver/milestone/4) or request examples you'd like to see by posting in [Discussions](https://github.com/progrium/macdriver/discussions).
+> June 13, 2024: **MacDriver is now DarwinKit and we're about to release 0.5.0!** The [legacy branch](https://github.com/progrium/macdriver/tree/legacy) and [previous releases](https://github.com/progrium/macdriver/releases) are still available for existing code to work against. Use `main` until 0.5.0 is released.
 
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