Is this just a simple letter to someone putting them on official notice that they are beneficiary? Or is more complicated than that? I am clueless. Please help.I have since met with an elder attorney and was told that if there was a will, then the matter would have gone to probate and the 5.6 letter would have been required. Attorney also said since there was no will, my filing the rev 1500 forms was proper and there is no legallly required letter that I must send out. All heirs are aware of they are getting a share of the estate via mail and email.