The Next Release of PowerShell – PowerShell 7

Steve Lee

Steve

Recently, the PowerShell Team shipped the Generally Available (GA) release of PowerShell Core 6.2. Since that release, we’ve already begun work on the next iteration!

We’re calling the next release PowerShell 7, the reasons for which will be explained in this blog post.

Why 7 and not 6.3?

PowerShell Core usage has grown significantly in the last two years. In particular, the bulk of our growth has come from Linux usage, an encouraging statistic given our investment in making PowerShell viable cross-platform.  This chart represents the number of times pwsh.exe (or just pwsh on Linux/macOS) was started (unless telemetry was disabled).

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However, we also can clearly see that our Windows usage has not been growing as significantly, surprising given that PowerShell was popularized on the Windows platform. We believe that this could be occurring because existing Windows PowerShell users have existing automation that is incompatible with PowerShell Core because of unsupported modules, assemblies, and APIs. These folks are unable to take advantage of PowerShell Core’s new features, increased performance, and bug fixes. To address this, we are renewing our efforts towards a full replacement of Windows PowerShell 5.1 with our next release.

This means that Windows PowerShell and PowerShell Core users will be able to use the same version of PowerShell to automate across Windows, Linux, and macOS and on Windows, and PowerShell 7 users will have a very high level of compatibility with Windows PowerShell modules they rely on today.

We’re also going to take the opportunity to simplify our references to PowerShell in documentation and product pages, dropping the “Core” in “PowerShell 7”. The PSEdition will still reflect Core, but this will only be a technical distinction in APIs and documentation where appropriate.

Note that the major version does not imply that we will be making significant breaking changes. While we took the opportunity to make some breaking changes in 6.0, many of those were compromises to ensure our compatibility on non-Windows platforms. Prior to that, Windows PowerShell historically updated its major version based on new versions of Windows rather than Semantic Versioning

.NET Core 3.0

PowerShell Core 6.1 brought compatibility with many built-in Windows PowerShell modules, and our estimation is that PowerShell 7 can attain compatibility with 90+% of the inbox Windows PowerShell modules by leveraging changes in .NET Core 3.0 that bring back many APIs required by modules built on .NET Framework so that they work with .NET Core runtime. For example, we expect Out-GridView to come back (for Windows only, though)!

A significant effort for PowerShell 7 is porting the PowerShell Core 6 code base to .NET Core 3.0 and also working with Windows partner teams to validate their modules against PowerShell 7.

Support Lifecycle Changes

Currently, PowerShell Core is under the Microsoft Modern Lifecycle Policy. This means that PowerShell Core 6 is fix-forward: we produce servicing releases for security fixes and critical bug fixes, and you must install the latest stable version within 6 months of a new minor version release.

In PowerShell 7, we will align more closely with the .NET Core support lifecycle, enabling PowerShell 7 to have both LTS (Long Term Servicing) and non-LTS releases.

We will still have monthly Preview releases to get feedback early.

When do I get PowerShell 7?

The first Preview release of PowerShell 7 will likely be in May. Be aware, however, that this depends on completing integration and validation of PowerShell with .NET Core 3.0.

Since PowerShell 7 is aligned with the .NET Core timeline, we expect the generally available (GA) release to be some time after the GA of .NET Core 3.0.

What about shipping in Windows?

We are planning on eventually shipping PowerShell 7 in Windows as a side-by-side feature with Windows PowerShell 5.1, but we still need to work out some of the details on how you will manage this inbox version of PowerShell 7.

And since the .NET Core timeline doesn’t align with the Windows timeline, we can’t say right now when it will show up in a future version of Windows 10 or Windows Server.

What other features will be in PowerShell 7?

We haven’t closed on our feature planning yet, but expect another blog post relatively soon with a roadmap of our current feature level plans for PowerShell 7.

Steve Lee https://twitter.com/Steve_MSFT Principal Engineering Manager PowerShell Team

31 comments

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  • Avatar
    Kenneth Benson

    It’s been awhile since I’ve worked with Powershell(retired) but I try to stay updated. Can someone define for me what “inbox version” means in relation to Powershell updates?

    • Avatar
      "Fleet Command"

      “Inbox version” actually means “built-in version”, the one shipped with Windows. It is a known fact that Microsoft employees do not speak proper English. Instead of “built-in” or “bundled”, “shipped with” or “out-of-the-box”, they say “inbox”.
      This isn’t the only case. You should read their official update-related terms. It seems to have been written by someone who intends to harass English-speakers. They have released something called “2019-01 Security Only Quality Update for Windows”! Also, there is the famous Microsoft term “boot partition”, which refers to a partition that probably does not have any boot loader on it and does not participate in the boot process. I am not trying to write a comprehensive guide to Microsoft’s (non-)English mistakes here; just enough to give you the hint as to what’s going on.

      • Avatar
        Kenneth Benson

        Thank you, that does explain things. I had wondered as there is also a part of Powershell that works with Exchange to script things and it was confusing if they meant that or the builtin thing. Have a good day!

  • Avatar
    Alex Neihaus

    What, pray tell, is an “inbox” version of PowerShell? Does that mean I have to email every use of Out-File?
    I appreciate the openness but recommend less jargon.

  • Avatar
    Joost Kuin

    Although I appreciate Microsoft’s effort to support platforms besides Windows, I did not appreciate v6 core for lacking full compatibility with v5.So I’m super relieved to hear v7 bringing back compatibility with previous releases

  • Tom Holt
    Tom Holt

    WPF and Windows Forms APIs are now supported correct?  .NET Core 3 supports these products (Windows only) so by extension so should PowerShell 7.  The fact that Out-Gridview works implies support for WPF.  Do you plan on porting PowerShell ISE to  PowerShell 7 as well?  I think you will have more interest in the new PowerShell open source version from the Windows community if these capabilities are supported.

  • Avatar
    Luigi Grilli

    I don’t understand where the surprise is that nobody in their right mind is using powershell core on windows. Nothing that works in 5.1 works in core. What would be the point? I’m extremely worried about this v7 and how you plan to make desktop modules work there. It is going to be the usual powershell mess

  • Avatar
    Gregory Suvalian

    Will username/password authentication into Azure be supported from powershell core? In 6.2 it ends up in following error
    Add-AzAccount : Username + Password authentication is not supported in PowerShell Core. Please use device code authentication for interactive log in, or Service Principal authentication for script log in.

  • Manuel Philippus Mell
    Manuel Philippus Mell

    I pretty new to this, but I have a question, do I have to unistall powershell core 6.2.2 after installing powershell core 7 preview? I can see and open them both.