What’s up Python? Wheels in the browser, astral still moves fast, and my new favorite @

A June 2026 Python ecosystem roundup covering three main developments: Pyodide gaining official wheel support via PEP 783 and cibuildwheel v4.0, enabling pip install of third-party packages directly in the browser; Astral (now part of OpenAI) cancelling its commercial pyx offering while open-sourcing the GPU index, adding Emscripten platform support to uv, drafting a new Python-specific compression format to replace zip/tar, and continuing rapid improvements to the ty type checker; and PEP 835 proposing a shorthand @ syntax for Annotated type metadata, making type annotations with Pydantic and FastAPI significantly less verbose.