This evening it looks like Eric Gray released a new video on his blog regarding the installation of the gold release of vSphere 4.0 (vCenter 4.0/ESX 4.0)
http://www.vcritical.com/2009/04/vmware-vcenter-server-40-installation-video/
I noticed while watching the video some of the build information is available and thought it would be interesting to compare build numbers from the BETA and also some of the upgrade videos. While this information will not be available until GA, it might potentially be safe to say these may be the final build numbers
BETA Builds
VMware vCenter Server, 4.0.0, 140742 VMware ESX, 4.0.0, 140815
vSphere upgrade path video Builds
VMware vCenter Server, 4.0.0, 151823 VMware ESX, 4.0.0, 151680
Reference: http://download3.vmware.com/vsphere/vsphere-migration-part2.html @ 00:35, 03:22 and 1524
Eric's gold vSphere installation video Builds
VMware vCenter Server, 4.0.0, 162316 VMware ESX, 4.0.0, 162367
Reference: http://www.vcritical.com/2009/04/vmware-vcenter-server-40-installation-video/ @ 6:54 and 7:18
yes, I have too much time on my hands and this was after watching Frost Nixon, did a little investigation of my own 
=========================================================================
William Lam
VMware vExpert 2009
VMware ESX/ESXi scripts and resources at:
If you find this information useful, please award points for "correct" or "helpful".
I was going to chime in, we have latest RC builds, and those build numbers don't match lamw's post either.. so yep, looks like we all need to be patient
VMware VAC - Premier