There have been some rumors but I can now officially share the update release 1 for vSphere vCenter Server 5.1.

vCenter Server 5.1 Update 1 | Build 1064983
vCenter Server Appliance 5.1 Update 1 | Build 1065184

Download from VMware.com

What’s New

This release of VMware vCenter Server 5.1 Update 1 offers the following improvements:

  • vCenter Server is now supported on Windows Server 2012
  • Additional vCenter Server Database Support: vCenter Server now supports the following databases.
    • Microsoft SQL Server 2012
    • Microsoft SQL Server 2008 R2 SP2
  • Additional Guest Operating System Customization Support -vCenter Server now supports customization of the following guest operating systems:
    • Windows 8
    • Windows Server 2012
    • Ubuntu12.04
    • RHEL 5.9
  • vCenter Essentials no longer enforces vRAM usage limit of 192 GB
    With vSphere 5.1 Update 1, the Essentials and Essentials Plus licenses no longer restrict virtual machine power-on operations when the vRAM usage limit of 192 GB is met.
  • Resolved Issues – This release delivers a number of bug fixes that have been documented in the Resolved Issues section.

Click to review the complete VMware vSphere 5.1 Update 1 release notes

 

Quick Upgrade Instructions

Single VM vCenter Server

  1. Mount ISO
  2. Select Simple Install
  3. Installer will detect SSO, IS and vCenter and upgrade binaries to Update 1
  4. Run individual Installer for vSphere Web Client to upgrade web client

--> Please see the rest on the blog : http://blogs.vmware.com/vsphere/2013/04/vmware-vcenter-server-5-1-update-1-released.html