ah this was the note i left on chat yesterday that eric was suggesting the uri's should not include version info that should be a property of the term. i think more people are moving that way. here is his talk

http://www.w3.org/2013/Talks/0604-SemTech-egp/#(1)

and the section on term mapping came up here:

http://www.w3.org/2013/Talks/0604-SemTech-egp/#(22)

i'll see if i can get him to point to a discussion on the web on this.