# Python 3.15.0 beta 1 is here!

DevFeed: [Python 3.15.0 beta 1 is here!](<https://devfeed.tech/articles/python-3-15-0-beta-1-is-here-2400.md>)

Original publisher: [Read original article](<https://blog.python.org/2026/05/python-3150-beta-1/>)

Author: Hugo van Kemenade

Published: 2026-05-07T00:00:00Z

Content type: release

Language: en

Sources: [Python Insider](<https://devfeed.tech/sources/python-insider.md>)

Topics: [Python](<https://devfeed.tech/topics/python.md>), [releases](<https://devfeed.tech/topics/releases.md>), [Linux](<https://devfeed.tech/topics/linux.md>), [observability](<https://devfeed.tech/topics/observability.md>), [macOS](<https://devfeed.tech/topics/macos.md>), [Windows](<https://devfeed.tech/topics/windows.md>), [configuration](<https://devfeed.tech/topics/configuration.md>)

Tags: [jit](<https://devfeed.tech/tags/jit.md>), [maintainers](<https://devfeed.tech/tags/maintainers.md>), [observability](<https://devfeed.tech/tags/observability.md>), [performance](<https://devfeed.tech/tags/performance.md>), [python](<https://devfeed.tech/tags/python.md>), [release](<https://devfeed.tech/tags/release.md>), [releases](<https://devfeed.tech/tags/releases.md>), [testing](<https://devfeed.tech/tags/testing.md>)

## AI overview

Python 3.15.0 beta 1 is the first beta release and marks the feature freeze. The article highlights new language and type-system features, profiling and observability improvements, UTF-8 as the default encoding, C API and stable ABI changes, JIT performance gains, and updated Windows binaries. It also asks maintainers to test the beta and report issues, while recommending that production releases wait for the first release candidate.

## Source excerpt

The propreantepenultimate 3.15 beta is out!