1.6.1 preinstalled on all stacks. Release notes:
No significant change other than the CLI upgrade.
- Stable & Beta update: https://releases.xamarin.com/stable-release-15-2/
- Alpha update: https://releases.xamarin.com/alpha-release-15-3-preview-1/
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.
If you’d like to add additional tools to be pre-installed you can find the instructions on GitHub, for both the Linux and for the macOS stacks.
Information about Stack types & update schedules can be found here: discuss.bitrise.io/t/281.