2012

Sept. 1- vs. Nevada
Sept. 8 - vs. Southern Utah
Sept. 15 - at Ohio State
Sept. 22 - at USC
Sept. 29 - vs. Arizona State
Oct. 6 - vs. UCLA
Oct. 13 - at Washington State
Oct. 20 - vs. Stanford
Oct. 27 - at Utah
Nov. 2 (Friday) - vs. Washington
Nov. 10 - vs. Oregon
Nov. 17 - vs. at Oregon State
Nov. 24 - BYE

2013 (need one game)
Aug. 31 - Northwestern
Sept. 14 - Ohio State
at Arizona
Colorado
at UCLA
USC
at Oregon
Oregon State
at Washington
Washington State
at Stanford

2014 (need two games)
Aug. 30 - at Northwestern
Arizona
at Colorado
UCLA
at USC
Oregon
at Oregon State
Washington
at Washington State
Stanford

2015 (need two games)
at Texas
at Arizona St.
at UCLA
USC
Utah
at Oregon
Oregon St.
at Washington
Washington St.
at Stanford

2016 (need two games)
Texas
Arizona St.
UCLA
at USC
at Utah
Oregon
at Oregon St.
Washington
at Washington St.
Stanford

2017 and beyond
The Pac-12 and Big-10 have signed a non-conference scheduling agreement that will result in one game each year against a Big-10 team for every team in the Pac-12:

We could see six home-and-away series in 2017 and 2018 and then the matchups would shift. Another possibility is creating three pods of eight teams, four from each league, where each team would play the four from the other conference. These pods could be determined by teams' track record. Delany said the games likely would take place in the second, third and fourth weeks of the season, although he didn't rule out having them during the opening weekend.

From the SF Chronicle, an interesting look at college football scheduling. An excerpt:

[Steve] Holton [Cal's Deputy Director of Athletics] said that coach Jeff Tedford has "an A-B-C philosophy'' about scheduling. That is, each year he wants to play a school from the A list -- a BCS-caliber team from a major conference. He wants a B team from the Mountain West or the Western Athletic Conference. And he wants a C team, or, as Holton said, "somebody you think you have a pretty good opportunity to beat.''