Posted by: Ed in SoDak Date: July 30, 2012 06:58PM
Registered: 7 years ago Posts: 647
I'd say offhand it's 6.9! Never heard of it. 6.5 is the newest mentioned in Mike Scott's "T2 Revs" sticky on top of this page. He says revisions that do not alter performance may not be advertised. There can also be internal company or manufacturing reasons. They have always continued to research and improve many models and update them with little to no fanfare. -Ed