# Announcing Flower 1.28.0

**URL:** <https://discuss.flower.ai/t/announcing-flower-1-28-0/1223>\
**Category:** General\
**Tags:** flower, release\
**Created:** [April 2, 2026, 7:07pm UTC](https://discuss.flower.ai/t/announcing-flower-1-28-0/1223 "2026-04-02T19:07:55Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![pan-h](https://dub1.discourse-cdn.com/flex013/user_avatar/discuss.flower.ai/pan-h/32/67_2.png) [@pan-h](https://discuss.flower.ai/u/pan-h)\
**Post date:** [April 2, 2026, 7:07pm UTC](https://discuss.flower.ai/t/announcing-flower-1-28-0/1223/1 "2026-04-02T19:07:55Z")

</div>

![image](https://europe1.discourse-cdn.com/flex013/uploads/flower/original/1X/e38397888d31c6201b273dada82fc2f9249bca70.jpeg)

Just two weeks before [Flower AI Summit 2026](https://flower.ai/events/flower-ai-summit-2026/), the Flower team is excited to announce the release of Flower 1.28 stable, packed with new updates!

**Flower is a friendly framework for collaborative AI and data science.**  
It makes novel approaches such as federated learning, federated evaluation, federated analytics, and fleet learning accessible to a wide audience of researchers and engineers.

### Thanks to our contributors

We would like to give our special thanks to all the contributors who made the new version of Flower possible (in `git shortlog` order):

`Charles Beauville`, `Chong Shen Ng`, `Daniel J. Beutel`, `Daniel Nata Nugraha`, `Heng Pan`, `Javier`, `Julian Rußmeyer`, `Micah Sheller`, `Mohammad Naseri`, `Patrick Foley`, `Taner Topal`, `William Lindskog`, `Yan Gao`, `xiaoyanshen799`

### What’s new?

- **Introduce federation-based simulation configuration and management** ([#6787](https://github.com/flwrlabs/flower/pull/6787), [#6790](https://github.com/flwrlabs/flower/pull/6790), [#6791](https://github.com/flwrlabs/flower/pull/6791), [#6806](https://github.com/flwrlabs/flower/pull/6806), [#6813](https://github.com/flwrlabs/flower/pull/6813), [#6820](https://github.com/flwrlabs/flower/pull/6820), [#6821](https://github.com/flwrlabs/flower/pull/6821), [#6826](https://github.com/flwrlabs/flower/pull/6826), [#6829](https://github.com/flwrlabs/flower/pull/6829), [#6837](https://github.com/flwrlabs/flower/pull/6837), [#6846](https://github.com/flwrlabs/flower/pull/6846), [#6848](https://github.com/flwrlabs/flower/pull/6848), [#6857](https://github.com/flwrlabs/flower/pull/6857), [#6858](https://github.com/flwrlabs/flower/pull/6858), [#6859](https://github.com/flwrlabs/flower/pull/6859), [#6860](https://github.com/flwrlabs/flower/pull/6860), [#6861](https://github.com/flwrlabs/flower/pull/6861), [#6865](https://github.com/flwrlabs/flower/pull/6865), [#6867](https://github.com/flwrlabs/flower/pull/6867), [#6882](https://github.com/flwrlabs/flower/pull/6882), [#6883](https://github.com/flwrlabs/flower/pull/6883), [#6888](https://github.com/flwrlabs/flower/pull/6888), [#6895](https://github.com/flwrlabs/flower/pull/6895), [#6907](https://github.com/flwrlabs/flower/pull/6907), [#6934](https://github.com/flwrlabs/flower/pull/6934))

- **Improve local SuperLink stability and configuration handling** ([#6797](https://github.com/flwrlabs/flower/pull/6797), [#6873](https://github.com/flwrlabs/flower/pull/6873), [#6874](https://github.com/flwrlabs/flower/pull/6874), [#6889](https://github.com/flwrlabs/flower/pull/6889))

- **Add configurable FAB inclusion and exclusion rules** ([#6803](https://github.com/flwrlabs/flower/pull/6803), [#6804](https://github.com/flwrlabs/flower/pull/6804), [#6805](https://github.com/flwrlabs/flower/pull/6805), [#6822](https://github.com/flwrlabs/flower/pull/6822), [#6823](https://github.com/flwrlabs/flower/pull/6823), [#6872](https://github.com/flwrlabs/flower/pull/6872), [#6885](https://github.com/flwrlabs/flower/pull/6885))

- **Introduce FAB format v1 validation rules and requirements** ([#6782](https://github.com/flwrlabs/flower/pull/6782), [#6825](https://github.com/flwrlabs/flower/pull/6825), [#6843](https://github.com/flwrlabs/flower/pull/6843), [#6851](https://github.com/flwrlabs/flower/pull/6851), [#6887](https://github.com/flwrlabs/flower/pull/6887))

- **Add non-blocking version update checks across Flower components** ([#6786](https://github.com/flwrlabs/flower/pull/6786), [#6788](https://github.com/flwrlabs/flower/pull/6788), [#6833](https://github.com/flwrlabs/flower/pull/6833), [#6938](https://github.com/flwrlabs/flower/pull/6938))

- **Support port `0` for automatic OS-assigned ports** ([#6795](https://github.com/flwrlabs/flower/pull/6795))

- **Add `--version` flag to Flower CLI components** ([#6781](https://github.com/flwrlabs/flower/pull/6781))

- **Add dynamic data seed option to FlowerTune LLM examples** ([#6831](https://github.com/flwrlabs/flower/pull/6831))

- **Add `flwr federation remove-account` command for managing federation membership** ([#6757](https://github.com/flwrlabs/flower/pull/6757), [#6759](https://github.com/flwrlabs/flower/pull/6759), [#6764](https://github.com/flwrlabs/flower/pull/6764), [#6772](https://github.com/flwrlabs/flower/pull/6772), [#6777](https://github.com/flwrlabs/flower/pull/6777), [#6778](https://github.com/flwrlabs/flower/pull/6778), [#6789](https://github.com/flwrlabs/flower/pull/6789))

- **Improve availability and reliability of message delivery and state handling** ([#6773](https://github.com/flwrlabs/flower/pull/6773), [#6785](https://github.com/flwrlabs/flower/pull/6785), [#6877](https://github.com/flwrlabs/flower/pull/6877), [#6915](https://github.com/flwrlabs/flower/pull/6915))

- **Fix handling of scalar (0D) NumPy arrays in strategies and mods** ([#6783](https://github.com/flwrlabs/flower/pull/6783))

- **Improve documentation** ([#6332](https://github.com/flwrlabs/flower/pull/6332), [#6742](https://github.com/flwrlabs/flower/pull/6742), [#6771](https://github.com/flwrlabs/flower/pull/6771), [#6834](https://github.com/flwrlabs/flower/pull/6834), [#6838](https://github.com/flwrlabs/flower/pull/6838), [#6910](https://github.com/flwrlabs/flower/pull/6910), [#6929](https://github.com/flwrlabs/flower/pull/6929), [#6941](https://github.com/flwrlabs/flower/pull/6941))

- **Improve CI/CD workflows and developer tooling** ([#6701](https://github.com/flwrlabs/flower/pull/6701), [#6732](https://github.com/flwrlabs/flower/pull/6732), [#6738](https://github.com/flwrlabs/flower/pull/6738), [#6739](https://github.com/flwrlabs/flower/pull/6739), [#6743](https://github.com/flwrlabs/flower/pull/6743), [#6744](https://github.com/flwrlabs/flower/pull/6744), [#6753](https://github.com/flwrlabs/flower/pull/6753), [#6768](https://github.com/flwrlabs/flower/pull/6768), [#6769](https://github.com/flwrlabs/flower/pull/6769), [#6770](https://github.com/flwrlabs/flower/pull/6770), [#6775](https://github.com/flwrlabs/flower/pull/6775), [#6793](https://github.com/flwrlabs/flower/pull/6793), [#6816](https://github.com/flwrlabs/flower/pull/6816), [#6835](https://github.com/flwrlabs/flower/pull/6835))

- **General improvements** ([#6578](https://github.com/flwrlabs/flower/pull/6578), [#6627](https://github.com/flwrlabs/flower/pull/6627), [#6734](https://github.com/flwrlabs/flower/pull/6734), [#6740](https://github.com/flwrlabs/flower/pull/6740), [#6748](https://github.com/flwrlabs/flower/pull/6748), [#6749](https://github.com/flwrlabs/flower/pull/6749), [#6751](https://github.com/flwrlabs/flower/pull/6751), [#6755](https://github.com/flwrlabs/flower/pull/6755), [#6763](https://github.com/flwrlabs/flower/pull/6763), [#6774](https://github.com/flwrlabs/flower/pull/6774), [#6776](https://github.com/flwrlabs/flower/pull/6776), [#6779](https://github.com/flwrlabs/flower/pull/6779), [#6800](https://github.com/flwrlabs/flower/pull/6800), [#6801](https://github.com/flwrlabs/flower/pull/6801), [#6802](https://github.com/flwrlabs/flower/pull/6802), [#6811](https://github.com/flwrlabs/flower/pull/6811), [#6815](https://github.com/flwrlabs/flower/pull/6815), [#6827](https://github.com/flwrlabs/flower/pull/6827), [#6828](https://github.com/flwrlabs/flower/pull/6828), [#6839](https://github.com/flwrlabs/flower/pull/6839), [#6840](https://github.com/flwrlabs/flower/pull/6840), [#6841](https://github.com/flwrlabs/flower/pull/6841), [#6842](https://github.com/flwrlabs/flower/pull/6842), [#6868](https://github.com/flwrlabs/flower/pull/6868), [#6869](https://github.com/flwrlabs/flower/pull/6869), [#6893](https://github.com/flwrlabs/flower/pull/6893), [#6900](https://github.com/flwrlabs/flower/pull/6900), [#6901](https://github.com/flwrlabs/flower/pull/6901), [#6906](https://github.com/flwrlabs/flower/pull/6906), [#6908](https://github.com/flwrlabs/flower/pull/6908), [#6909](https://github.com/flwrlabs/flower/pull/6909), [#6918](https://github.com/flwrlabs/flower/pull/6918), [#6919](https://github.com/flwrlabs/flower/pull/6919), [#6920](https://github.com/flwrlabs/flower/pull/6920), [#6921](https://github.com/flwrlabs/flower/pull/6921), [#6922](https://github.com/flwrlabs/flower/pull/6922), [#6923](https://github.com/flwrlabs/flower/pull/6923), [#6930](https://github.com/flwrlabs/flower/pull/6930), [#6932](https://github.com/flwrlabs/flower/pull/6932))

### Incompatible changes

- **Remove deprecated `run_simulation` Python entrypoint** ([#6752](https://github.com/flwrlabs/flower/pull/6752))