Subaru.ca says it's 60/40 but can go to 50/50 on demand. It's possible U.S. models are different.
http://www.subaru.ca/WebPage.aspx?We...&WebSiteID=282
BTW, did anybody else notice the paddles work in 'D' mode? I guess if you're not happy with the CVTs ratio selection you can force it. It seems to switch back after a while.