Let me just copy & paste that here as it's a little hard to find...
1. Effective dates . The Board’s revisions published on July 30, 2008 (the “final rules”) apply to covered loans (including refinance loans and assumptions considered new transactions under § 226.20) for which the creditor receives an application on or after October 1, 2009, except for the final rules on advertising, escrows, and loan servicing. But see comment 1(d)(3)-1. The final rules on escrow in § 226.35(b)(3) are effective for covered loans (including refinancings and assumptions in § 226.20) for which the creditor receives an application on or after April 1, 2010; but for such loans secured by manufactured housing on or after October 1, 2010.