I have just updated the list after receiving word the new version is out and the build numbers are known for vSphere 4 and vCenter Server. So I compiled a list of build numbers and updates from the patch notes for VMware ESX and VMware vCenter Server.

vCenter Server 4.0 Update 1 | 19 Nov 2009 | Build 208156

vCenter Server 4.0 | 05 May 2009 | Build 162902

VirtualCenter 2.5 Server Update 5 | 10 Jul 2009 | Build 174791 (English version)

VirtualCenter 2.5 Server Update 4 | 23 Feb 2009 | Build 147633 (English version)

VirtualCenter 2.5 Server Update 3 | 03 Oct 2008 | Build 119598 (English version)

VirtualCenter 2.5 Server Update 2 | 25 July 2008 | Build 104217 (English version)

VirtualCenter 2.5 Server Update 1 | 10 Apr 2008 | Build 84767 (English version)

VirtualCenter 2.5 Server | 10 Dec 2007 | Build 64201

VMware ESX Server 4.0 Update 1 | 19 Nov 2009 | Build 208167

VMware ESX Server 4.0 | 21 May 2009 | Build 164009

VMware ESX Server 3.5 Update 5 | 03 Dec  2009 | Build 207095

VMware ESX Server 3.5 Update 4 | 30 Mar 2009 | Build 153875

VMware ESX Server 3.5 Update 3 | 06 Nov 2008 | Build 123630

VMware ESX Server 3.5 Update 2 | 13 Aug 2008 | Build 110268

VMware ESX Server 3.5 Update 1 | 10 Apr 2008 | Build 82663

VMware ESX Server 3.5 | 20 Feb 2008 | Build 64607

Hope it helps out for easy reference.

Updated: 19 November 2009