Wow. Okay, the regulation that controls the content is 12 CFR 1026.20(d) and 1026.20(c). Effective date for changes to the ARM notices is tomorrow 1/10/2014. Many of the posts in this forum are specific to the ARM changes, so look around to learn more.
You will also want to look at the model and sample forms provided by the CFPB for H-4(D)(1) through (D)(4). However, just copying the samples will not ensure compliance. There are also new timing requirements.
My opinion, take it for what its worth. Opinions expressed are my own and not those of my employer and are not legal advice.