The Python team has published the last planned release candidate of Python 3.15, with the final release scheduled for October 1. From this point on, no further ABI changes are planned, and the team wants to keep code churn to a minimum. Maintainers of third-party Python projects are being asked to prepare for Python 3.15 now — a standard milestone on the road to the finished release.

Elsewhere in the developer world: the Rust-written coreutils reached version 0.11, switching its diagnostics engine to Ariadne and increasing compatibility with the GNU originals. PyTorch 2.14 continues the 2x series' path from a research-first framework toward a unified, hardware-agnostic platform for production training and large-scale inference; the release improves performance, reliability and hardware support, and introduces a new GPU math backend called NVGEMM.

Other projects are making noise too. Qt is retiring its AI Assistant: from September 30 it will no longer be part of Qt Creator, with support ending December 31, as several specialized developer agents take over its tasks directly in the workflow. Abuuba, a fediverse server written in Elixir and Phoenix, reached version 1.0 as a drop-in Mastodon replacement supporting all 289 endpoints — far faster and leaner according to its developer, though not yet ready for production. The runtime validation library Zod, meanwhile, added pre-compilable schemas in version 4.5 for faster parsing.

The roundup, published by heise online's developer desk, also notes Visual Studio Code 1.136's experimental chat background personalization in the agents window and the call for speakers for the BOB conference 2027. For Python developers, the immediate takeaway is simple: test packages against the final RC over the coming weeks so the October transition goes smoothly.