Cosby has been fighting these stories for many years.
Remember that a police report was filed in 2000 by one woman and after a 2004 rape and the resulting lawsuit where 13 more women came forward to support the "drugging/raping" method he uses, he settled out of court in 2006 on the 2004 rape.
This was reported in many sources back then but only now got legs because of a number of things that created a perfect storm for Cosby, including a big mistake he made on social media as he was promoting his new big media push.
Find the link between him and Obama (hint, hint... ex-mayor of Kansas City) and you will understand why it happened now.