# 🚀 Release v5.28.0

**URL:** <https://discourse.pymc.io/t/release-v5-28-0/17578>\
**Category:** News\
**Created:** [February 21, 2026, 9:31am UTC](https://discourse.pymc.io/t/release-v5-28-0/17578 "2026-02-21T09:31:21Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![pymc-bot](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/pymc-bot/32/9384_2.png) [@pymc-bot](https://discourse.pymc.io/u/pymc-bot)\
**Post date:** [February 21, 2026, 9:31am UTC](https://discourse.pymc.io/t/release-v5-28-0/17578/1 "2026-02-21T09:31:22Z")

</div>

A new release of **pymc** is now available!

## 📦 Release Information

- **Version:** `v5.28.0`
- **Repository:** [pymc-devs/pymc](https://github.com/pymc-devs/pymc)
- **Release Page:** [Release v5.28.0 · pymc-devs/pymc · GitHub](https://github.com/pymc-devs/pymc/releases/tag/v5.28.0)
- Note: It may take some time for the release to appear on PyPI and conda-forge.

## 📋 Release Notes

## What’s Changed

### New Features 🎉

- observe(sum) for Normal via rewrite to equivalent NormalRV by [@eclipse1605](https://github.com/eclipse1605) in [#8067](https://github.com/pymc-devs/pymc/pull/8067)
- Implement dims.Weibull by [@ricardoV94](https://github.com/ricardoV94) in [#8081](https://github.com/pymc-devs/pymc/pull/8081)
- Support logcdf, logccdf and icdf for dim RVs by [@ricardoV94](https://github.com/ricardoV94) in [#8083](https://github.com/pymc-devs/pymc/pull/8083)
- SMC Multiprocessing and Progress Bar Refactor by [@jessegrabowski](https://github.com/jessegrabowski) in [#8047](https://github.com/pymc-devs/pymc/pull/8047)

### Maintenance 🔧

- add action yml to populate issue by [@williambdean](https://github.com/williambdean) in [#7807](https://github.com/pymc-devs/pymc/pull/7807)
- Broadcast probability functions with value and size by [@ricardoV94](https://github.com/ricardoV94) in [#8105](https://github.com/pymc-devs/pymc/pull/8105)
- `dims.Data` creates `XTensorSharedVariables` by [@ricardoV94](https://github.com/ricardoV94) in [#8096](https://github.com/pymc-devs/pymc/pull/8096)

**Full Changelog** : [Comparing v5.27.1...v5.28.0 · pymc-devs/pymc · GitHub](https://github.com/pymc-devs/pymc/compare/v5.27.1...v5.28.0)

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_This post was automatically generated from the GitHub release._