Best 2 letters ever.
Unlikely for Apple to drop enterprise support, now more and more businesses are integrating iOS and Mac support.
Don't get too excited about those two letters. It's not the first time that Steve Jobs flat out lied about something.
Besides, businesses are not using OS X server to integrate iOS and OS X systems. And not one business I've ever heard of - not even Apple! - is using OS X Server on their servers.
Should there ever be a server version of OS X Lion, you can safely assume that it will be the last server version of OS X to ever hit the market. When you don't sell server hardware and when you do not support third party hardware with your software, there is zero reason to develop a server operating system...