The North Carolina Legislature has revised (long overdue, in my opinion) the statutory Health Care Power of Attorney (HCPOA) and Declaration of a Desire for a Natural Death forms. The Living Will (LW) is now called "Advanced Directive for a Natural Death." Both forms offer more choices in terms of treatment options, etc., and allow one to designate whether or not the agent under the HCPOA can override the instructions in the LW.
Since these new forms are improvements on the old ones, I recommend that everyone execute a new HCPOA and LW, as well as a separate Authorization for Disclosure of Protected Health Care Information under HIPAA. These are important legal documents, so it's a good idea to consult with your attorney and physician prior to signing them. It is also important to make sure that the strict witnessing and notarization requirements are met.