There is a new demonetization move being made by YouTube in the wake of the new rules. If you use copyright media and simply choose to accept any claims made against your videos, you need to be aware of this new move. It is indeed briefly stated in the YouTube Help section, but until now has never been broadly enforced.
YouTube is now sending out emails declaring channels which consist largely of copyright media ineligible for monetization. There are two forms these emails take: one will allow the channel owner to reapply to the YouTube Partner Program once 30 days have passed, and is accompanied by a change to the Monetization channel Feature Box which states "This channel is currently ineligible for monetization. Learn More". The second one will say that the owner is being disabled for "repeated submission of ineligible material and/or insufficient documentation"; and is accompanied by a change to the Monetization Feature Box which states the same, and will not allow the channel owner to reapply to the YPP with that channel.
In addition, channels consisting largely of copyright media are showing up with the following Monetization Feature Box Statment: "Monetization has been disabled on this channel due to Adsense Policy Violation", though that statement may also appear for other reasons. People seem to forget that attempted monetization of third party copyright media, without proper licensing and obtaining Commercial Use Rights violates Adsense Policy as well as YouTube Partner Program Policy.
In closing, I just want to warn all here that using copyright music or video and hoping to get away with just a CID claim is no longer the safest road if you want to retain your YouTube Monetization.