On Sunday, July 15, 2018 at 5:34:44 PM UTC-7, wrote:
My Ventus 2cxM has been flying in the Experimental Category since new (2003), and each year I've been faithfully updating the Experimental Letter (I just change the date) and mailing it to my FSDO. I've been told that the wording of the standard Experimental Letter is different now, and if I request it, I could have a Letter with the new wording issued. Does anyone have any comments about this?

My DG-200 (1979) Operating Limits said nothing about a Program letter. (FS, see Wings and Wheels) The same for my Ventus 2 (the OL say no geographical limits and again nothing about a letter) so I haven't been sending a letter to the FSDO.