R-07.2015 has a 10/2015 publication and an 11/2015 publication. The two publications differ in substance, not merely in form. For ease and clarity of citation, I suggest the revision number match the publication date in the future. Alternatively, I suggest the MPEP be referred to primarily by a publication date (e.g., "E9 P-11.2015") rather than a revision number.
I understand that presently the "R" number is the...