For those looking into implementing SRM 4.0 four KB articles have been released related to SRM 4.0:

• Site Recovery Manager (SRM) 4.0 Upgrade FAQ
  http://kb.vmware.com/kb/1013166
• Using vCenter Heartbeat With SRM 4.0
  http://kb.vmware.com/kb/1014266
• Enabling 128-bit encryption for SRAs that use SSL:
  http://kb.vmware.com/kb/1014232
• Context-sensitive help not accessible in Internet Explorer 7:

  http://kb.vmware.com/kb/42104394

• Requirements When Using Trusted Certificates with SRM:

  http://kb.vmware.com/kb/1008390