# Differences between Slicer Versions
**URL:** https://discourse.slicer.org/t/differences-between-slicer-versions/10672
**Category:** Development
**Created:** [March 13, 2020, 3:16pm UTC](https://discourse.slicer.org/t/differences-between-slicer-versions/10672 "2020-03-13T15:16:22Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@siaeleni](https://discourse.slicer.org/u/siaeleni)
#### Post date: [March 13, 2020, 3:16pm UTC](https://discourse.slicer.org/t/differences-between-slicer-versions/10672/1 "2020-03-13T15:16:22Z")
Hi,
I am trying to run the same ICP algorithm “vtkIterativeClosestPointTransform” and it seems that I get different results with exactly the same data and algorithm between “4.11.0-2020-03-10” and “4.11.0-2019-06-12” versions. Is there any stable 4.11 version to use? When are you going to release a stable 4.11 version?
Thanks
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### Author:  [@pieper](https://discourse.slicer.org/u/pieper)
#### Post date: [March 13, 2020, 4:11pm UTC](https://discourse.slicer.org/t/differences-between-slicer-versions/10672/2 "2020-03-13T16:11:59Z")
Hi @siaeleni -
Is it related to [the change from LPS to RAS](https://discourse.slicer.org/t/model-files-are-now-saved-in-lps-coordinate-system/10446)? If not, then it could be related to the version of VTK. If so the best thing might be to create a short python script to reproduce the issue with sample data to post on the VTK github.
Regarding the release, it’ll be called Slicer5, and it’s being tracked here:
[https://www.slicer.org/wiki/Documentation/Labs/Slicer5-roadmap](https://www.slicer.org/wiki/Documentation/Labs/Slicer5-roadmap)
It’s a major effort that doesn’t currently have dedicated funding so people are doing it as a kind of side project with no firm release date. Hopefully soon.
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### Author:  [@siaeleni](https://discourse.slicer.org/u/siaeleni)
#### Post date: [March 13, 2020, 4:40pm UTC](https://discourse.slicer.org/t/differences-between-slicer-versions/10672/3 "2020-03-13T16:40:28Z")
Thanks Steve!
It is related to the change from LPS to RAS.
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### Author:  [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [March 13, 2020, 5:10pm UTC](https://discourse.slicer.org/t/differences-between-slicer-versions/10672/4 "2020-03-13T17:10:27Z")
> [@siaeleni](#):
>
> Is there any stable 4.11 version to use?
I would consider current 4.11 version as stable. List of issues that we plan to address before releasing it as a new stable version is available [here](https://github.com/Slicer/Slicer/milestone/1). I don’t think there are any serious open issues.
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### Author:  [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [March 13, 2020, 5:18pm UTC](https://discourse.slicer.org/t/differences-between-slicer-versions/10672/5 "2020-03-13T17:18:14Z")
> [@siaeleni](#):
>
> Is there any stable 4.11 version to use?
I would consider current 4.11 version is stable. List of issues that we plan to address before releasing it as a new stable version is available [here](https://github.com/Slicer/Slicer/milestone/1).
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### Author:  [@pieper](https://discourse.slicer.org/u/pieper)
#### Post date: [March 13, 2020, 5:55pm UTC](https://discourse.slicer.org/t/differences-between-slicer-versions/10672/6 "2020-03-13T17:55:08Z")
> [@lassoan](#):
>
> List of issues that we plan to address before releasing it as a new stable version is available [here](https://github.com/Slicer/Slicer/milestone/1).
By the way, the content of these issues is still being migrated - should be up later today.