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PowerShell 7.1 Preview is now available

The PowerShell team has introduced a new version of PowerShell. Shorty after the release of PowerShell 7.0, a Preview version of the upcoming PowerShell 7.1 platform is out to the public. Here is what to expect, and what has already changed.

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The preview release of PowerShell 7.1 is notable for including  .NET 5 preview 1.

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Starting with PowerShell 7.0, devs have shifted to align with .NET’s release and support life-cycle more closely. PowerShell 7.1 is expected to become available within a week or two of .NET 5’s release date of winter 2020 and align with their annual release cadence going forward.

What's new in PowerShell 7.1 Preview

Breaking Changes

  • Use invariant culture string conversion for -replace operator (#10954) (Thanks @iSazonov!)

Engine Updates and Fixes

  • Revert the PRs that made DBNull.Value and NullString.Value treated as $null (#11648)

Experimental Features

  • Use invariant culture string conversion for -replace operator (#10954) (Thanks @iSazonov!)

General Cmdlet Updates and Fixes

  • Fix an operator preference order issue in binder code (#12075) (Thanks @DamirAinullin!)
  • Fix NullReferenceException when binding common parameters of type ActionPreference (#12124)
  • Fix default formatting for deserialized MatchInfo (#11728) (Thanks @iSazonov!)
  • Use asynchronous streams in Invoke-RestMethod (#11095) (Thanks @iSazonov!)
  • Address UTF-8 Detection In Get-Content -Tail (#11899) (Thanks @NoMoreFood!)
  • Handle the IOException in Get-FileHash (#11944) (Thanks @iSazonov!)
  • Change 'PowerShell Core' to 'PowerShell' in a resource string (#11928) (Thanks @alexandair!)
  • Bring back MainWindowTitle in PSHostProcessInfo (#11885) (Thanks @iSazonov!)
  • Miscellaneous minor updates to Windows Compatibility (#11980)
  • Fix ConciseView to split PositionMessage using [Environment]::NewLine (#12010)
  • Remove network hop restriction for interactive sessions (#11920)
  • Fix NullReferenceException in SuspendStoppingPipeline() and RestoreStoppingPipeline() (#11870) (Thanks @iSazonov!)
  • Generate GUID for FormatViewDefinition InstanceId if not provided (#11896)
  • Fix ConciseView where error message is wider than window width and doesn't have whitespace (#11880)
  • Allow cross-platform CAPI-compatible remote key exchange (#11185) (Thanks @silijon!)
  • Fix error message (#11862) (Thanks @NextTurn!)
  • Fix ConciseView to handle case where there isn't a console to obtain the width (#11784)
  • Update CmsCommands to use Store vs certificate provider (#11643) (Thanks @mikeTWC1984!)
  • Enable pwsh to work on Windows systems where mpr.dll and STA is not available (#11748)
  • Refactor and implement Restart-Computer for Un*x and macOS (#11319)
  • Add an implementation of Stop-Computer for Linux and macOS (#11151)
  • Fix help function to check if less is available before using (#11737)
  • Update PSPath in certificate_format_ps1.xml (#11603) (Thanks @xtqqczze!)
  • Change regular expression to match relation-types without quotes in Link header (#11711) (Thanks @Marusyk!)
  • Fix error message during symbolic link deletion (#11331)
  • Add custom 'Selected.*' type to PSCustomObject in Select-Object only once (#11548) (Thanks @iSazonov!)
  • Add -AsUTC to the Get-Date cmdlet (#11611)
  • Fix grouping behavior with Boolean values in Format-Hex (#11587) (Thanks @vexx32!)
  • Make Test-Connection always use the default synchronization context for sending ping requests (#11517)
  • Correct startup error messages (#11473) (Thanks @iSazonov!)
  • Ignore headers with null values in web cmdlets (#11424) (Thanks @iSazonov!)
  • Re-add check for Invoke-Command job dispose. (#11388)
  • Revert "Update formatter to not write newlines if content is empty (#11193)" (#11342) (Thanks @iSazonov!)
  • Allow CompleteInput to return results from ArgumentCompleter when AST or Script has matching function definition (#10574) (Thanks @M1kep!)
  • Update formatter to not write new lines if content is empty (#11193)

Besides these changes, there are general code, test, and documentation improvements.

What to expect in PowerShell 7.1

  • PowerShellGet 3.0
  • Secret Management Module, an extensible abstraction layer in PowerShell for interacting with Secrets and Secrets Vaults, will get Linux support.
  • PSScriptAnalyzer 2.0 for better user experience with VSCode-PowerShell and PSEditorServices.
  • Improvements made to PowerShell Jupyter Kernel
  • Improvements made to platyPS vNext, a PowerShell module that devs currently use to convert PowerShell documentation from markdown to updatable-help.

The official announcement also mentions a number of areas where it is possible to make more improvements and changes, including Installation and Updating, Shell Improvements, Interactive User Experience.

Finally, PowerShell may get a minimal setup, that only includes the parts of PowerShell needed for your scripts. Not only would it take less disk space, but more importantly, a minimal set of code means less patching and security attack surface.

You can download it here:

Download PowerShell 7.1 Preview 1

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Author: Sergey Tkachenko

Sergey Tkachenko is a software developer who started Winaero back in 2011. On this blog, Sergey is writing about everything connected to Microsoft, Windows and popular software. Follow him on Telegram, Twitter, and YouTube.

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