"I have to admit that Downton Abbey is one of my favorite shows," the rapper, who changed his background and user picture to Downton Abbey promotional iimages, tweeted. "And that's why I'm so excited today."

So while he may not be joining the show, we're pretty sure super-fan Diddy will be tuning in when Downton Abbey returns for its fourth season on Sunday, Jan. 5.

Two new actors who definitely will be joining the PBS hit? The series will introduce Gary Carr, who will play the series' first recurring black character, and Tom Cullen as a potential love interest for Lady Mary