$session = New-PSSession -ConnectionUri https://exchange.domain.local/powershell -AllowRedirection:$true -SessionOption $PSSessionOption -Authentication NegotiateWithImplicitCredential -ConfigurationName Microsoft.Exchange ;
Get-PSSession ;
Get-PSSession -State Opened -ComputerName localhost ;
Get-PSSession -State Opened -ComputerName 127.0.0.1 ;

PS C:\Program Files\PowerShell\6-preview> Get-PSSession

 Id Name            Transport ComputerName    ComputerType    State         ConfigurationName    Availability
 -- ----            --------- ------------    ------------    -----         -----------------     ------------
  2 Runspace2       WSMan     exchange.dom... RemoteMachine   Opened        Microsoft.Exchange       Available

( Get-PSSession -State Opened -ComputerName localhost ) -eq $null
True
( Get-PSSession -State Opened -ComputerName 127.0.0.1 ) -eq $null
True

$Host
Name             : ConsoleHost
Version          : 6.1.0-preview.2