??? What does client only OS mean?

OOPS... cant link to it...

first few paragraphs:
Microsoft Corp. made a "common-sense" decision late last month to change its original plan and make its next major Windows operating system release, code-named Longhorn, a client-only product, a company official confirmed today.
But the goal for Longhorn's successor, code-named Blackcomb, will be to deliver the client and server operating systems at the same time, said Bob O'Brien, a group product manager in Microsoft's Windows server division. O'Brien said a specific time frame is difficult to predict. At this point, Blackcomb is not expected before the end of 2005 or early 2006, he said.

"Any of the server technologies that we were looking toward delivering in Longhorn will be carried forward in the Blackcomb time frame," O'Brien added. "There are no cuts being made."

O'Brien said the decision to eliminate the Longhorn server release reflected customer feedback that Longhorn would be emerging too soon after Windows .Net Server 2003, which is due to ship early next year.

Does it mean that Windows OS upgrades aren't going to be available for regular people and we should learn some other system?

I think they mean they are releasing the Pro, Home versions for now, and waiting on Server.

Ah... then it is a different use of the term client...

Thanks. I was starting to wonder how to OS shop.

Yep. In the IT world, we say that a "Client" is a non-server OS.