### Author:  [@ghaabor](https://discuss.bitrise.io/u/ghaabor)
#### Post date: [March 29, 2018, 4:40pm UTC](https://discuss.bitrise.io/t/weekly-virtual-machine-stack-updates-2018-03-31/4660/1 "2018-03-29T16:40:55Z")
## Highlights
### Android/Linux stacks
- No significant change
### Xcode stacks
- Xcode 9.3 (final): [Xcode 9.3 (final) arrived!](http://discuss.bitrise.io/t/xcode-9-3-final-arrived/4666)
### Visual Studio for Mac stacks
- **Stable channel** : [https://releases.xamarin.com/service-release-15-6-3/](https://releases.xamarin.com/service-release-15-6-3/)
### Hybrid stacks
- No significant change
## This week’s changes (diffs)
>
## Stack System Reports
You can find the full system report of all of the available Stacks on GitHub: [https://github.com/bitrise-io/bitrise.io/tree/master/system\_reports](https://github.com/bitrise-io/bitrise.io/tree/master/system_reports).
If you’d like to add additional tools to be pre-installed you can find the instructions on [GitHub](https://github.com/bitrise-io/bitrise.io#request-a-tool-to-be-pre-installed-on-a-build-machine), for both the Linux and for the macOS stacks.
_Information about **Stack types & update schedules** can be found here: [discuss.bitrise.io/t/281](http://discuss.bitrise.io/t/how-are-the-bitrise-io-stacks-updated-and-with-what-frequency/281)._
**Happy Building!**
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### Author:  [@viktorbenei](https://discuss.bitrise.io/u/viktorbenei)
#### Post date: [March 29, 2018, 4:44pm UTC](https://discuss.bitrise.io/t/weekly-virtual-machine-stack-updates-2018-03-31/4660/2 "2018-03-29T16:44:21Z")
All stacks passed our tests and scheduled to be deployed on Saturday 🚀
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### Author:  [@allenhumphreys](https://discuss.bitrise.io/u/allenhumphreys)
#### Post date: [March 29, 2018, 9:22pm UTC](https://discuss.bitrise.io/t/weekly-virtual-machine-stack-updates-2018-03-31/4660/3 "2018-03-29T21:22:43Z")
@ghaabor @viktorbenei Can we get Xcode 9.3 stable as well?
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### Author:  [@viktorbenei](https://discuss.bitrise.io/u/viktorbenei)
#### Post date: [March 30, 2018, 12:48pm UTC](https://discuss.bitrise.io/t/weekly-virtual-machine-stack-updates-2018-03-31/4660/4 "2018-03-30T12:48:51Z")
Definitely, should be available soon, today! 😉
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### Author:  [@viktorbenei](https://discuss.bitrise.io/u/viktorbenei)
#### Post date: [March 30, 2018, 1:07pm UTC](https://discuss.bitrise.io/t/weekly-virtual-machine-stack-updates-2018-03-31/4660/5 "2018-03-30T13:07:09Z")
Xcode 9.3 final is now available 😉
> [@Xcode 9.3 (final) arrived!](http://discuss.bitrise.io/t/xcode-9-3-final-arrived/4666):
>
> Xcode 9.3 (final) is now available! tada To select this Stack you just have to open your app on [bitrise.io](https://www.bitrise.io), go to the Workflow tab (Workflow Editor), and on the Stack tab select the Xcode 9.3.x stack option, and your next build will start on the Xcode 9.3 stack. Note: you can now select separate stacks for separate workflows! Read more at: [https://blog.bitrise.io/per-workflow-stack-selection-is-here](https://blog.bitrise.io/per-workflow-stack-selection-is-here). This new Virtual Machine replaced the previous Xcode 9.3 configuration, so if you’ve alre…
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### Author:  [@viktorbenei](https://discuss.bitrise.io/u/viktorbenei)
#### Post date: [March 31, 2018, 11:58am UTC](https://discuss.bitrise.io/t/weekly-virtual-machine-stack-updates-2018-03-31/4660/6 "2018-03-31T11:58:49Z")
New stacks deployed and are available in production 🎉