dduelin
Site Supporter
http://www.shell-livedocs.com/data/published/en-US/f43921f8-8e28-49d7-9022-09d19fffe655.pdf
The spec sheet for the "new" T6 shows SM SN rating. It's just not listed on the bottle.
As you know by now that link does not work but going to the current web site today and looking at the link to certifications they don't show this one, or at least I could not find it. In another thread someone claimed it's viewable on BTOG site but that one was several years old and before the late 2016 changes to the formula. Since so many folks have used Rotella in gas powered vehicles you would think Shell wouldn't remove API SM/SN now. It's not like they need to save room on the bottle.
The pdf you posted is unreadable but maybe your copy is large enough to read the release or copyright date.