Proposed Release Schedule for SciPy 1.16.0

Contributor & Development Discussion scipy
1

Hi all,

I’m proposing the release schedule for SciPy 1.16.0 below and I’m happy to hear feedback/requests for adjustments if needed.

Date Event
May 17, 2025 Branch maintenance/1.16.x
May 21, 2025 SciPy 1.16.0rc1 release
June 4, 2025 SciPy 1.16.0rc2 release (if needed)
June 18, 2025 SciPy 1.16.0 final release
  • Current count of open issues with 1.16.0 milestone on GitHub: 19
  • Current count of open PRs with 1.16.0 milestone on GitHub: 40

The schedule is somewhat adjusted to avoid work-related and PTO travel periods and to (hopefully) leverage high-bandwidth in person interactions at the summit May 10-15–ideally this will help substantially reduce the count of leftover blockers to branching.

Will probably aim for final release a little bit after NumPy 2.3.0 to ensure full support for that. Based on Chuck’s most recent plans, we’re branching a few days after him I think.

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2

It would be good to have Windows ARM wheels, but that’s going to depend on OpenBLAS and numpy as well.

3

Will there be a 1.16.0rc2?

4

Whether or not there will be an RC2 is up to @tylerjereddy as the release manager (he’ll be back soon), but I’d say very likely yes since there are a number of PRs marked for backporting and one of those moves us to a different Windows version to build wheels on, and that’s the kind of thing that we’d typically test in an RC first.

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5

Ok, thanks. I’ll wait a bit before releasing scipy-stubs 1.16.0.0 then :slight_smile:

6

Yeah, planning an RC2 per the schedule above. There are some trickier bugs showing up in issues as well, but not sure we’ll get them all resolved in time (as always, I suppose!).

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