It's in the online catalog, just do a search for "syn3". It now stays fresh longer. That is the first time I've ever seen that terminology applied to a motor oil; sounds more like an ad for an air freshener. You can tell the blurb was written by a nontechnical person with no knowledge of the subject, and I especially like where they say it is manufactured by H-D engineers. I guess Citgo doesn't make it anymore, they whip it up in a lab in the engineering department in Milwaukee. And I guess they don't know about the Amsoil and Mobil 1 certifications of their oils that also meet the requirements for all three holes. Oh, thats right, they really mean they (Harley) haven't certified them, not that they don't really meet requirements. Same BS story they used for years to tell us not to use any synthetic in their engines, back when all they had was HD360 dino oil.
I would have to guess that they have seen a drop in sales for SYN3 as more people opt for one of the other brands, so they decided to tweak the additive package and proclaim it all new and improved. At least they didn't use this tweak to adjust the price upward, like they usually do. Still $11.95 per quart MSRP.
Before anyone takes my post as a knock on SYN3 itself, as opposed to a knock on the clowns in Milwaukee, be advised that I personally believe SYN3 is a good motor oil. It beats the heck out of a lot of other products on the market, including HD360 as well as synthetics from several well known names. However, I will stick with Mobil 1 V-Twin in my engine, and appropriate specific function lubes in the other holes. I have good reasons for my choice that have nothing to do with how good SYN3 is or isn't. To each his own.
Jerry