What's interesting is the way of developing your cyanogenmod and speed in every version terdisi develop from stable version (Stable), RC (Release Candidate), monthly (M), Daily (Nightly), and the experiment (Experimental). The most frequent change clear that cyanogenmod daily version, which is due to too much to confuse what the resulting changes. Well for you who want to know what has been updated. You can use the changelog Nightly.
Tips knowing this Cyanogenmod changelog you can check on the two websites are quite reliable namely bbqdroid and cmxlog. By knowing the changelog you do not have to bother to look for changes in your cyanogenmod custom ROM. Good luck.