Applies to:
Windows Server 2012 RTM
Windows 8 RTM

Note:  You should check http://support.microsoft.com for the latest version of the different files.
  Note 2:  These are not available in Windows Update.
  Note 3:  You can download them without entering your e-mail address and captcha if you are a Microsoft Premier customer and have a http://Premier.Microsoft.com account.
  Note 4:  Carefully review the list and decide which might be applicable to your unique environment.
  Note 5:  Test in your test and your quality assurance environment.

Originally published Feb. 2014.   Updated Feb. 2014.

List of WinRM related hotfixes post RTM for Windows 8 RTM as of Feb. 2014:

2842230 "Out of memory" error on a computer that has a customized MaxMemoryPerShellMB quota set and has WMF 3.0 installed
http://support.microsoft.com/kb/2842230
Update(s):
Wsmsvc.dll  6.2.9200.16622
Wsmwmipl.dll  6.2.9200.16622 
Wsmsvc.dll  6.2.9200.20727  
Wsmwmipl.dll  6.2.9200.20727  
Winrscmd.dll  6.2.9200.16622 
Winrscmd.dll  6.2.9200.20727  
Wsmsvc.dll  6.2.9200.16622 
Wsmwmipl.dll  6.2.9200.16622 
Wsmsvc.dll  6.2.9200.20727  
Wsmwmipl.dll  6.2.9200.20727  
Winrscmd.dll  6.2.9200.16622 
Winrshost.exe  6.2.9200.16611 
Winrscmd.dll  6.2.9200.20727  
Winrshost.exe  6.2.9200.20725 

Supersede(s):
2802886 You cannot register an SPN from a Windows 7, Windows 8, Windows Server 2008 R2 or Windows Server 2012-based client computer in a disjoint namespace
http://support.microsoft.com/kb/2802886
Update(s):
Wsmsvc.dll  6.2.9200.20707 
Wsmwmipl.dll  6.2.9200.20707  
Wsmsvc.dll  6.2.9200.20707 
Wsmwmipl.dll  6.2.9200.20707