People have predicted the demise of "Heroes" since last spring when there was doubt there would even be a fourth season. There is a fourth season but at the end of October, a fresh round of rumors about the series' end cropped up. According to rumor, NBC has already told the show's producers to wrap it up so the show could end in May 2010. In other words, "Like hell we're renewing. You're lucky we don't pull the plug now."
Well, it looks like things have gone from bad to way worse. According to this article
http://www.examiner.com/x-24882-Dallas-Pop-Media-Examiner~y2009m11d19-Heroes-pulling-in-less-viewership-than-the-alreadycancelled-Trauma, "Heroes" pulled in lower ratings Monday night than a show that has already been cancelled! Ruh-roh.
NBC could let it run its course and end it in May as planned but move it to Saturday nights at nine to minimize ratings damage since it's the lowest rated time period on t.v. period. It's like a hospice ward for dying t.v. shows. That way NBC can put a midseason replacement in that slot. Or it could banish "Heroes" to an affiliate like Sy-Fy (I spit every time I have to write that) to run out the rest of the season. We'll just have to see.