The UPC or Uniform Probate Code has been modified to accept a Notarized Will as valid. Lawrence W Waggoner, wrote an article “The UPC Authorizes Notarized Wills”, 34 ACTEC 83 (Fall 2008). (This article was brought to my attention by Gerry Beyer of the Wills, Trust & Estate professor Blog)
The article begins by reviewing the history of attested wills which were derived from the English Statute of Frauds Act of 1837. The requirements state that the will must be (1) in writing, (2) signed by the testator, and (3) witnessed by attesting witnesses. The UPC also popularized the concept used in Florida of self-proved wills. A self-proved will allows the testator to execute a will and attach an affidavit to the will, notarized and signed by the testator and the attesting witnesses.
In 1990- the UPC adopted another new concept, the harmless error rule. Under the harmless error rule, a will that does not strictly comply with the statutory requirements for an attested will is treated as if it had been properly executed if the will is proved by clear and convincing evidence that the decedent intended the document to be his or her will. So far Colorado, Hawaii, Michigan, Montana, New Jersey, South Dakota, Utah, and Virgina have adopted statutes based upon the Harmless-Error Rule.