# Release notes for Stan 2.25?

**URL:** <https://discourse.mc-stan.org/t/release-notes-for-stan-2-25/18653>\
**Category:** General\
**Created:** [October 14, 2020, 1:26pm UTC](https://discourse.mc-stan.org/t/release-notes-for-stan-2-25/18653 "2020-10-14T13:26:06Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![ssp3nc3r](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.mc-stan.org/ssp3nc3r/32/120_2.png) [@ssp3nc3r](https://discourse.mc-stan.org/u/ssp3nc3r)\
**Post date:** [October 14, 2020, 1:26pm UTC](https://discourse.mc-stan.org/t/release-notes-for-stan-2-25/18653/1 "2020-10-14T13:26:06Z")

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Where are the notes for Stan version releases? What’s new/fixed in 2.25?

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**Author:** ![rok\_cesnovar](https://avatars.discourse-cdn.com/v4/letter/r/7bcc69/32.png) [@rok\_cesnovar](https://discourse.mc-stan.org/u/rok_cesnovar)\
**Post date:** [October 14, 2020, 1:30pm UTC](https://discourse.mc-stan.org/t/release-notes-for-stan-2-25/18653/2 "2020-10-14T13:30:59Z")

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Hi,

2.25 has not been released yet. A release candidate was built late last night US time: [https://github.com/stan-dev/cmdstan/releases/tag/v2.25.0-rc1](https://github.com/stan-dev/cmdstan/releases/tag/v2.25.0-rc1)  
The Pre-release tag and the -rc1 suffix mark that this is not an official release, just a candidate for now.

A post with a summary of new features and bugfixes in the release candidate will be up shortly. Proper release notes with all the detailed changes will be posted once the official 2.25 is released, which will be on Tuesday if everything goes according to plan.

Thanks!

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**Author:** ![torkar](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.mc-stan.org/torkar/32/1355_2.png) [@torkar](https://discourse.mc-stan.org/u/torkar)\
**Post date:** [October 14, 2020, 3:54pm UTC](https://discourse.mc-stan.org/t/release-notes-for-stan-2-25/18653/3 "2020-10-14T15:54:59Z")

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And,

```
install_cmdstan(release_url = "https://github.com/stan-dev/cmdstan/releases/download/v2.25.0-rc1/cmdstan-2.25.0-rc1.tar.gz", cores = 4)

```

works very nicely on my OS X.

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**Author:** ![avehtari](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.mc-stan.org/avehtari/32/5935_2.png) [@avehtari](https://discourse.mc-stan.org/u/avehtari)\
**Post date:** [October 14, 2020, 7:45pm UTC](https://discourse.mc-stan.org/t/release-notes-for-stan-2-25/18653/4 "2020-10-14T19:45:50Z")

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> [@rok\_cesnovar](#):
>
> A post with a summary of new features and bugfixes in the release candidate will be up shortly. Proper release notes with all the detailed changes will be posted once the official 2.25 is released, which will be on Tuesday if everything goes according to plan.

Any chance that there could be one week from the announcement of the release candidate to the actual release? Justification for this is that it would give people a few days of time to test it before the release. I can help advertising as soon as there is a post with a summary of new features.

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**Author:** ![rok\_cesnovar](https://avatars.discourse-cdn.com/v4/letter/r/7bcc69/32.png) [@rok\_cesnovar](https://discourse.mc-stan.org/u/rok_cesnovar)\
**Post date:** [October 14, 2020, 7:49pm UTC](https://discourse.mc-stan.org/t/release-notes-for-stan-2-25/18653/5 "2020-10-14T19:49:16Z")

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> [@avehtari](#):
>
> Any chance that there could be one week from the announcement of the release candidate to the actual release?

Sure, seems reasonable to me. Will ask the rest of the devs on the Github issue, bit I am guessing no one will mind two more days of peace and quiet :) Edit: done [https://github.com/stan-dev/math/issues/2128#issuecomment-708624218](https://github.com/stan-dev/math/issues/2128#issuecomment-708624218)

Will post the annoucement tomorrow morning CET if @stevebronder wont have time to do it tonight.

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**Author:** ![stevebronder](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.mc-stan.org/stevebronder/32/17242_2.png) [@stevebronder](https://discourse.mc-stan.org/u/stevebronder)\
**Post date:** [October 14, 2020, 10:40pm UTC](https://discourse.mc-stan.org/t/release-notes-for-stan-2-25/18653/6 "2020-10-14T22:40:13Z")

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Hey yes I’ll send it over to you tonight!

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**Author:** ![nipnipj](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.mc-stan.org/nipnipj/32/7745_2.png) [@nipnipj](https://discourse.mc-stan.org/u/nipnipj)\
**Post date:** [October 17, 2020, 1:32am UTC](https://discourse.mc-stan.org/t/release-notes-for-stan-2-25/18653/7 "2020-10-17T01:32:22Z")

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Will there be improvements in the estimation speed?