Add draft for Scala 3.6.3 relase blogpost

Author: WojciechMazur

_downloads/2025-01-14-3.6.3.md

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+---
+title: Scala 3.6.3
+start: 14 January 2025
+layout: downloadpage
+release_version: 3.6.3
+release_date: "January 14, 2025"
+permalink: /download/3.6.3.html
+license: <a href="https://www.scala-lang.org/license/">Apache License, Version 2.0</a>
+api_docs: https://www.scala-lang.org/api/3.6.3/
+---

_posts/2025-01-14-release-notes-3.6.3.md

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+---
+category: announcement
+permalink: /news/3.6.3
+title: "Scala 3.6.3 is now available!"
+---
+Scala 3.6.3 is now available!
+
+The new feature introduced in this release is `-Yprofile-trace` compiler option enabling the generation of trace events in a standard JSON format. These can be used by tooling to graphically inspect the amount of time needed to process sources in each compilation phase.
+
+To use this feature run compilation with `-Yprofile-enabled` and `-Yprofile-trace:path/to/compiler.trace` to specify where traces should be saved. You can also optionally define `-Yprofile-destination:path/to/profiler.output` to redirect other profiler outputs that would be printed on the standard output otherwise. The final result file can rendered in the web browser using <https://ui.perfetto.dev>.
+For more details [refer to the Scala 3 PR](https://github.com/scala/scala3/pull/19897) or its [original Scala implementation](https://github.com/scala/scala/pull/7364).
+
+For a full list of changes and contributor credits, please refer to the [release notes](https://github.com/scala/scala3/releases/tag/3.6.3).