# Proton proton-10.0-4b — Proton 10.0-4b

- Product: Proton (https://whatsnew.fyi/product/valve-proton)
- Vendor: Valve
- Date: 2026-07-28
- Version: proton-10.0-4b
- Original notes: https://github.com/ValveSoftware/Proton/releases/tag/proton-10.0-4b
- Permalink: https://whatsnew.fyi/product/valve-proton/releases/proton-10.0-4b
- Labels: Platforms: Linux

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

---

- Added Steamworks SDK 1.65 support