Best of luck to everyone who is still waiting for updates, and congrats to all that have gotten the PPR.
FYI my CIC application status has not changed since I went in to IP2, it still looks like the below, so no change is not something to worry about. Also I never provided any 'additional document', everything was supplied at submission, and I paid RPRF at that point too..
Application status: We are processing your application. We will send you a message when there is an update or if we need more information from you.
Review of eligibility: We are reviewing whether you meet the eligibility requirements.
Review of medical results: You passed the medical exam.
Review of additional documents: The additional documents you provided are being reviewed.
Interview: You do not need an interview. We will send you a message if this changes.
Biometrics: We do not need your fingerprints. We will send you a message if this changes.
Background check: We are processing your background check. We will send you a message if we need more information.
Final decision: Your application is in progress. We will send you a message once the final decision has been made.
EDIT: The email I received said to send my photos to the London Visa Office, presumably they also processed me. Others have noted how London tends to be slow, maybe they are speeding things up now?