Microsoft not ruling out Windows XP extension

Just read this on Yahoo: http://news.yahoo.com/s/ap/20080424/ap_on_hi_te/microsoft_xp;_ylt=AhodIIdFIEjb8CK4kUUYV6MjtBAF.

Update:
From CNet: http://www.news.com/8301-10784_3-9927721-7.html?tag=newsmap.
From Computerworld: http://blogs.computerworld.com/has_microsoft_thrown_in_the_towel_on_vista.