Hey there,
You ask all sorts of loaded questions, Big Al
This is another one of those that I can't answer speficically, but that I can be sufficiently vague about.
ESX Server (with the virtual SMP add-on) is capable of supporting up to TWO virtual CPU's.
Being able to support more virtual CPU's (such as 4, 8, or even 16) is a major feature enhancement. We are working on this feature right now.
Where there is a business case to do so, usually VMware is acting.
Unfortunately, I cannot share with you any timeline in which we are going to release this support, as even I am not positive.
I'll share more with you on this feature request as I am able to reveal more information.
-Daryll