The BBC has released an official image via Twitter, teasing a new monster for the upcoming season. Its said the monster will appear in Block 3, which is Episodes 5 & 6
What’s that in the shadows? New monster about to meet Peter Capaldi and @Jenna_Coleman_ in #DoctorWho Series 9… pic.twitter.com/8ypBjcX5bF
— Doctor Who Official (@bbcdoctorwho) April 21, 2015