Lion Server
[url]http://www.apple.com/macosx/lion/[/url]
Right near the bottom of the page:
"Lion Server is now part of Mac OS X Lion. It’s easy to set up your Mac as a server and take advantage of the many services Lion Server has to offer."
So no more separate OS X Server and all Macs are Lion Servers. Another nail in the coffin or a smart move?