Attorney General Holder has withdrawn the decision in Matter of Silva-Trevino. Though this has little impact in certain jurisdictions (such as the Ninth Circuit) where circuit court decisions have essentially overruled Silva-Trevino, the withdraw of the decision may bring some uniformity in the minority jurisdictions that were still following the decision. Attorney General Holder has asked the Board of Immigration Appeals to create a new framework for determining how to evaluate whether a conviction qualifies as a crime involving moral turpitude.
The full text of the Attorney General's withdrawal of the decision can be found here: http://immigrantdefenseproject.org/wp-content/uploads/2011/03/AG-Order-Vacating-Silva-Trevino-2015.pdf