Ouch. The SL-1200MK2 is an awesome piece of equipment. This is just really shitty news. The fact that I've put off picking one up has finally bit me.
EDIT: So apparently Gizmodo got it wrong, and it's only the SL-1200MK6 model that is being discontinued (appended at the end of the link above). In other news, I hear that, three years ago, Christine O'Donnell did not have sex with an SL-1200MK2. (Everyone knows that Gizmodo and Gawker are sister publications, right? )
After being together for almost 40 years, it's probably time. At least until the money calls again. They were America's answer to the Stones in the 1970s and made some truly great rock but have evolved into an oldies act this decade.