Thanks to VMGuy.com for the detailed info below.
vCenter was also updated tonight with update 1 and can be downloaded here. Here’s the What’s new section from the release notes:
IBM DB2 Database Support for vCenter Server — This release adds support for IBM DB2 9.5 as the backend database platform for VMware vCenter Server 4.0. The following editions of IBM DB2 are supported:
IBM DB2 Enterprise 9.5
IBM DB2 Workgroup 9.5
IBM DB2 Express 9.5
IBM DB2 Express-C 9.5
VMware View 4.0 support — This release adds support for VMware View 4.0, a solution built specifically for delivering desktops as a managed service from the protocol to the platform.
Windows 7 and Windows 2008 R2 support — This release adds support for 32-bit and 64-bit versions of Windows 7 as well as 64-bit Windows 2008 R2 as guest operating system platforms. In addition, the vSphere Client is now supported and can be installed on a Windows 7 platform.
Pre-Upgrade Checker Tool — A standalone pre-upgrade checker tool is now available as part of the vCenter Server installation media that proactively checks ESX hosts for any potential issues that you might encounter while upgrading vCenter agents on these hosts as part of the vCenter Server upgrade process. You can run this tool independently prior to upgrading an existing vCenter Server instance. The tool can help identify any configuration, networking, disk space or other ESX host-related issues that could prevent ESX hosts from being managed by vCenter Server after a successful vCenter Server upgrade.
HA Cluster Configuration Maximum — HA clusters can now support 160 virtual machines per host in HA Cluster of 8 hosts or less. The maximum number of virtual machines per host in cluster sizes of 9 hosts and above is still 40, allowing a maximum of 1280 Virtual Machines per HA cluster.
Bug fixes described in Resolved Issues.