It is a fairly recent event.  their page started discussing it in July. 
The press release was in August.  Main page:
http://www.sun.com/servers/entry/lx50/
Announced here:
http://www.sun.com/smi/Press/sunflash/2002-08/sunflash.20020812.1.html

George



Sundar wrote:
> 
> Sun Linux?!? That's news to me. I was under the impression that Scott
> did not believe in open source :-) .
> 
> Cheers!
> Sundar
> 
> Dennis Kibbe wrote:
> 
> >On Monday 09 September 2002 12:33 pm, you wrote:
> >
> >>thought everyone may be interested.
> >>
> >>http://www.iht.com/cgi-bin/generic.cgi?template=articleprint.tmplh&ArticleI
> >>d=70026
> >>
> >
> >A very encouraging article with lots of good "talking points." Thanks for
> >posting the link.
> >
> >If M$ had started the switch to new licensing a year or two ago, things today
> >might be very different. But now that there are viable choices (SO, OO,
> >Mozilla) for the desktop, M$ seems to be licensing themselves out of the
> >marketplace.
> >
> >Dennis Kibbe
> >
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