# Slicer 4.8.1 release and transition to Qt5 and VTK9

**URL:** <https://discourse.slicer.org/t/slicer-4-8-1-release-and-transition-to-qt5-and-vtk9/1551>\
**Category:** Development\
**Tags:** qt\
**Created:** [November 28, 2017, 10:57pm UTC](https://discourse.slicer.org/t/slicer-4-8-1-release-and-transition-to-qt5-and-vtk9/1551 "2017-11-28T22:57:10Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![jcfr](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jcfr/32/17825_2.png) [@jcfr](https://discourse.slicer.org/u/jcfr)\
**Post date:** [December 20, 2017, 5:29am UTC](https://discourse.slicer.org/t/slicer-4-8-1-release-and-transition-to-qt5-and-vtk9/1551/8 "2017-12-20T05:29:14Z")

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Packages for Slicer 4.8.1 are currently being generated.

Once this is complete, the regular nightly builds will start.

Notes:

- At first, packages for Slicer 4.8.1 will not be available on [http://download.slicer.org](http://download.slicer.org). They first have to be marked as released. Also the windows packages will have to be signed.

- Expect some delay, since additional installer are being generated. Extensions build will take a little longer before being available.

- Starting today, extensions for Slicer 4.8.0 will _NOT_ be built anymore. Instead, extensions for Slicer 4.8.1 will be built daily.

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_[View the full topic](https://discourse.slicer.org/t/slicer-4-8-1-release-and-transition-to-qt5-and-vtk9/1551)._